A young police officer must prevent a bomb exploding aboard a city bus by keeping its speed above 50 mph.
Bomber extortionist's elevator plan backfires, so he rigs a bomb to a LA city bus. The stipulation is: once armed, the bus must stay above 50 mph to keep from exploding. Also if LAPD Officer tries to unload any passengers off, Payne will detonate it. Joe Morton co-stars as Jack's superior, and Jeff Daniels supports Jack helping him try to defuse the bomb.
When a young Los Angeles police department, Special Weapons and Tactics (SWAT) officer called Jack Traven angers retired bomb squad member Howard Payne, by foiling his attempt at taking hostages stuck in an elevator with a bomb, Payne in retaliation arms a bus with a bomb that will explode if it drops below 50 miles per hour. With the help of spunky passenger Annie, Jack and his partner Harry try to save the people on the bus before the bomb goes off, while also trying to figure out how Payne is monitoring them.
A retired Atlanta Police Department bomb squad explosives expert, called Howard Payne, tries to extort money by threatening to kill some people, trapped in a Los Angeles Skyscraper's elevator, with explosives. The city is about to give in when rookie Special Weapons and Tactics (SWAT) officer Jack Traven stops him. Jack and his partner, Harry Temple find Payne and corner him but instead of giving in he blows himself up. He is believed to be dead but has actually escaped and tries again to extort money from the city. This time he has placed a bomb on a bus that will arm itself once it reaches 50 mph and will explode if it drops below that speed. Payne dares Jack to stop him and tells whereabouts of where the bus will soon be and the rules of his twisted game. If Jack or the LAPD try and unload any passengers off the bus, Payne will detonate it. Jack tries to stop the bus before the bomb is armed but it's too late; all he can do now is to keep it going. With Harry trying to find Payne and Jack running out of Freeway and gas - This is one bus ride no one wants to miss.
Jack Traven is a young S.W.A.T cop in the Los Angeles police department. One morning Jack witnesses a bus explode and Jack receives a phone call from Howard Payne, a retired Atlanta bomb squad explosives expert gone bad, Payne has wired a passenger bus to explode, where if the bus speeds at 50 miles per hour the bomb is armed, if the bus slows down and drops below 50 miles per hour the bus will explode. Payne demands $3-millions dollars and Jack or any of the passengers tries to get off the bus, he will detonate the bomb. Managing to get on the bus, Jack with help of one of the passengers, Annie who is driving the bus when the driver is injured, tries to keep the passengers alive and guide the bus through the traffic, and keep the bus speeding at 50 miles per hour, as the S.W.A.T team and Jack's partner, explosives expert Harry Temple set to discover Payne's location and find a way to disarm the bomb before the bomb explodes when the bus runs out of gas.
In a downtown highrise building in L.A., a psychopathic bomber & extortionist rigs an elevator full of people to plummet into the basement if his $3-million demand is not met. When SWAT Officers Jack Traven & Harry Temple foil the bomber's plan and rescue the hostages, the bomber retaliates. First he blows up a city bus, then contacts Traven to warn him that a second bus has a bomb attached to it. Once that bus hits 50mph, the bomb is armed. If it drops below 50, it will explode. The bomber also warns Jack that if any attempt at rescue is made, the bomb will also explode. Jack races down the freeway and manages to board the bus. When an accident injures the driver, young bus passenger Annie is forced to take over behind the wheel and keep the bus running at 50 in order to stay alive. Will Jack and his fellow SWAT members be able to stop the psychopathic bomber - or will the passengers be killed when the bus runs out of gas?
- In a downtown Los Angeles office building a security guard is checking the basement when he runs across a man tinkering with some wiring. Asking to see a work order, the man suddenly stabs the guard in the ear, telling him "Nothing personal."
A group of people who work in the building are taking an express elevator down when a few explosions are heard, the cables are severed and the elevator plummets a few floors before the emergency brakes stop it. Los Angeles Police dispatch their SWAT team, including Officer Jack Traven (Keanu Reeves) and Detective Harry Temple (Jeff Daniels). Capt. McMahon (Joe Morton) briefs the men on the situation: bombs have already severed the main cables. The only thing keeping the elevator from dropping to the basement is the emergency brakes. The bomber has wired them with explosives, and has given a one hour ultimatum: pay him $3.7 million, or he blows the brakes.
Both Jack and Harry use building access panels to examine the bomb. Harry, the SWAT team's bomb squad leader, says the work doesn't look familiar but the bomber is definitely a professional. While they wait, Harry quizzes Jack: Jack is at an airport when a woman is taken hostage. The kidnapper is almost to a plane, what does Jack do? Jack suggests shooting the hostage with a non-lethal wound so the kidnapper can't take them with him. Harry scoffs, telling Jack he's crazy for the idea of shooting a civilian. Jack suddenly comes up with the idea to use a window cleaner's crane on the roof as a way to hopefully help get the passengers off. However, once they have hooked the crane, the bomber blows the emergency brakes, and the elevator begins to plummet.
The crane cable stops the elevator for a short time between two floors, where Harry and Jack manage to get the passengers unloaded before the crane pulls free of it's base and the elevator plummets to the bottom. Harry notes that the explosion happened three minutes earlier than the time limit given, with Jack thinking the bomber must still be in the building. With the main elevators having been shut down, Jack assumes the bomber must be aboard a freight elevator in the building.
Harry and Jack find the freight elevator, where they encounter Howard Payne (Dennis Hopper), their bomber, although his name is not yet known at this point. Payne shoots at them both with a shotgun, dropping Harry into the elevator car. He uses a control device he's wired to the car's control panel to raise the car to the top of the building, forcing Jack to jump into the car. Payne holds Harry hostage, and shows that he has wired himself with explosives. He uses his device to trick Jack and Harry's team into thinking they're getting off on a different floor but they arrive at a parking level instead. Payne attempts to take Harry with him to the building's parking garage, but Jack, recalling the scenario he and Harry had discussed earlier, shoots Harry in the leg, preventing Payne from taking Harry any further and causing Payne to drop him. Payne makes a dash out the door, but before Jack can get to him, the explosives go off, knocking him back.
Some time afterward, a commendation ceremony is held in which Jack and Harry are congratulated for their services and are given medals for their valor. They go to a bar where they and their colleagues celebrate their victory. An inebriated Harry tells Jack to be more cautious in his work because his recklessness could get him killed.
The next day, Jack stops into a small coffee shop for a drink. As he goes out to his car, a bus that had pulled away explodes and bursts into flames. A payphone nearby rings, and Jack is surprised to hear Payne's voice on the line. Payne explains that he had spent 2 years planning the 'elevator job,' and chastises Jack for ruining his 'life's work.' The bomber then goes on to explain that he has planted another bomb on an LA city bus, which will be armed the moment the bus passes 50 mph, and then will detonate if the bus drops below that speed. Payne also explains that if any passengers are removed from the bus, he will detonate it himself, and demands a ransom of $3.7 million (the same amount he'd demanded during the elevator kidnapping) by 11am. Furthermore, he knows that the bus' radio is out of order, so alerting the transit authority is useless. A final rule is that none of the passengers are allowed to get off the bus. Payne gives the bus number as 2525, and Jack takes off to catch up to it.
Jack manages to catch up to the bus en route, but when he frantically tries to get the bus driver to open the doors, the driver ignores him, thinking it's a prank. Jack then commandeers a Jaguar, and again catches up to the bus. After a mad struggle, Jack manages to relay to the driver that there is a bomb on the bus, and manages to board, jumping from the moving car into the bus' door. Harry is also alerted by Jack through the Jaguar owner's cellular phone.
Jack attempts to calm the bus passengers, but an altercation with one man wielding a gun, fearing that Jack has done all this to arrest him, forces a struggle and the bus driver is wounded. A young woman named Annie Porter (Sandra Bullock) takes the wheel, planning to hit the brakes. Jack sharply orders her not to stop the bus and informs the passengers about the bomb. At the suggestion of the injured driver, Jack opens an access panel in the bus floor, and finds a decoy and then the real bomb, which is alarmingly large. Relaying the info to Harry, Harry is perplexed at Jack's observation that the timer for the bomb is attached to a cheap gold watch. Harry's suspicions turn to the prospect that their mad bomber may be a former officer, and he has his staff start looking over information about officers who have worked with bombs or on bomb squads.
Back on the bus, a traffic jam on the freeways forces Annie to divert the bus onto city streets instead. There, with an LAPD helicopter following the bus with Capt. McMahon on board trying to arrange a survivable route, the occupants of the bus have a terrifying ordeal as Annie and Jack must deal with every conceivable obstacle that threatens to fatally slow the bus as it is forced to careen through the streets. These include being forced to take a one-way lane against opposing traffic, a tight turn that nearly overturns the bus, a crowd of school kids that crosses the bus' path at the worst possible time and a collision with a baby carriage that is sent flying, but is mercifully only carrying empty cans.
Eventually, a police escort arrives to guide the bus to the unfinished 105 freeway. The first entrance, a soft right turn, is blocked by a group of school kids and Annie & Jack are forced to make a hard right turn that nearly spills the bus on it's side. Once on the freeway, McMahon and a number of officers board a flatbed truck that pulls up next to the bus. McMahon wants to get the people off, but Jack explains that the news helicopters in the air are televising the event, and that Payne will detonate the bus if anyone gets off.
Jack soon receives a call from Payne in regards to what is being seen on television. Jack manages to get Payne to agree to letting the wounded bus driver off, though Payne tells Jack that 'the wildcat behind the wheel' is not to slow down. However, a passenger named Helen (Beth Grant) gets edgy, and attempts to get off the bus. As she stands over the entrance-way stairs, the smaller charge is set off and destroys the platform. Helen falls under the bus and is crushed under the wheels. During a few moments of relative calm, Annie tearfully confesses that she was profoundly relieved that the blast was not of the main bomb and she herself survived. Jack reassures Annie that is a perfectly normal human response to an extreme situation and she has nothing to regret while reminding her that the real person to blame is the bomber who put everyone in this situation in the first place.
McMahon is then informed that the 105 freeway is unfinished, and a stretch of roadway ahead contains a 50ft span that is missing. Jack is informed of this, but still refuses to take any passengers off. Desperately, Jack then instructs Annie to increase the bus speed, figuring there may be an incline that will allow them to jump the bus over the gap. Miraculously, his plan works, and the bus makes it to the other side.
Once over, Jack finds an off-ramp that leads to Los Angeles International Airport. Annie takes it, and enters through an airport exit, running over a pair of spike strips that blow a few of the tires. Jack's plan is to keep the news helicopter cameras from following them. Because the airport is restricted airspace, they can't fly over it. The long runways that are not in use will also allow the bus to circle and keep it out of civilian traffic and buy time until they can find Payne or deactivate the bomb.
Capt McMahon soon shows up at the airport with some more cops, and Jack gets off the bus onto a vehicle with the Captain. McMahon feels they should be able to unload the passengers safely, but Jack is still convinced that Payne will know. In response, Jack convinces Payne to let him disembark to negotiate the ransom and the police officer reassures the passengers that he will be back shortly to help them.
To the passengers' alarm, Jack has arranged to put himself onto a small-wheeled dolly attached by a cable to a small truck and sent under the still-moving bus, hoping to dismantle the bomb. However, Payne had fitted the device with a collapsible circuit and Jack is unable to disarm it. Harry has been giving Jack the information to try and dismantle the bomb, when his associates come back with Payne's identity. Payne turns out to be a former member of the Atlanta Police Department's bomb squad. Harry and his associates rush off to apprehend Howard.
Jack soon comes close to death when the cable towing the dolly he's on gives way, and he is almost run over by the bus. Jack clings to the undercarriage of the bus, but accidentally punctures the fuel tank with a screwdriver. The passengers on the bus help Jack up through an access panel in the bus' floor, and he survives. With leaking fuel a new problem, Jack calls for a fuel car to pace the bus and refuel them.
Meanwhile, Harry and some other members of the LAPD have staked out and entered Payne's home. They soon find he is not there but realize this too late, triggering a bomb planted in the house that kills those inside, including Harry.
After the bomb goes off, Payne calls Jack, and gloats over Harry's death. Payne then gives Jack instructions to deliver the $3.7 million ransom to a garbage can at Pershing Square downtown. Jack is unsure what to do next, when he notices the sweatshirt Annie had been wearing, which contains the logo for the Arizona Wildcats. Payne had called Annie a "wildcat" before on the phone, and now Jack realizes that Payne has been monitoring the bus through the security camera above the bus driver's seat. Though the camera can record video, it cannot record audio.
Jack radios over to McMahon regarding his plan. McMahon gets all the news vans nearby to stop taping, and commandeers one to find the signal going into the bus camera. With everyone sitting still on the bus, the news team records them, gathering enough footage to run a video loop to fool Payne. However, Annie notes that the fuel is almost on empty, and McMahon is forced to have the tape loop with only a minute of footage having been recorded.
An airport bus is brought alongside bus 2525, and the passengers are unloaded. However, the tires that had been punctured once the bus went through the airport's exits continue to lose their treads, and Annie and Jack are unable to get off. Jack affixes the steering wheel with some rope, the gas pedal with a steel pipe, and the two escape from under the bus using the access panel. The bus drives a ways off, before heading towards a cargo plane. As the speed drops below 50, the bus runs straight into a cargo plane and explodes.
After the passengers are treated by paramedics, the police receive a call from Payne wanting to know about the money. McMahon is about to tell Payne off, but Jack realizes that Payne does not know the bus exploded, giving them the advantage to capture the madman.
The money is placed in bags and dropped into the garbage container Payne had specified, with couple of paint bombs among the cash. A number of officers patrol Pershing Square, with Payne watching from an overhead building's window. Payne thinks he's won, until he notices the bus camera, and realizes that the tape is on a loop. Payne quickly puts on his uniform, and blending in with the other officers, walks over to Annie, and escorts her away from the scene, saying that he'd been sent by Jack.
Jack and a number of officers are watching the garbage can, but no one has appeared. Jack suddenly demands they turn on the homing beacon with the money... and all of them are surprised to see that the money is in motion. Jack rushes out to the garbage can, and finds that there is a hole in the bottom of it, leading down to a level below the street.
Jack finds an entrance to the area below street level, and is confronted with Annie strapped with explosives, and Payne standing nearby, holding a detonator. Payne chastises Jack a bit before making his way to the LA subway system, with Jack jumping aboard as it pulls away, crawling across the top.
Payne handcuffs Annie to a pole, and kills the train driver. Payne the explains his plan to Annie: he intends to get off the train with the money, but leave her to explode, causing the police to think they both died on the subway.
Payne's overzealous nature gets the better of him, as he hears Jack climbing on top of the train car. Playfully claiming he may be able to bribe Jack into letting him go, Payne reaches into the sack of money, only to set off the hidden dye pack bomb, ruining the money and covering him in purple dye.
Enraged, Payne then climbs up the side of the train car on the outside, and goes hand-to-hand with Jack. As they fight, Jack notices a low-overhanging light approaching, and holds Payne's head up while seizing the detonator to Annie's bomb from Payne. The light decapitates Payne, and his body falls over the side of the car.
Jack then enters the car, and manages to get the explosives off Annie. However, he does not have the key to her handcuffs, and Payne's killing of the train driver has rendered the brakes inoperable. A railmap shows Jack that there's a sharp curve ahead. He speeds up the train with the intention of derailing it. The plan works and Annie is freed from the bar. The train barrels out of an incomplete stretch of track right in front of the Chinese Theater in Hollywood. It lands on its side and comes to a halt. Annie and Jack are both alive and as they kiss, a number of tourists and others whom the train has stopped traffic for, come over to look at the strange spectacle.