After their divorced mother takes a job in Saudi Arabia, fraternal twins Scott and Jason Collins move from New York to Malibu to be with their father Peter, who runs a restaurant there called the Lighthouse. Both boys are immediately attracted to their neighbor Samantha and just as quickly start competing for her attention. Samantha's best friend Jennifer, or "Stads" as she's better known, starts developing a crush on Jason. Samantha is trying to stop Murray Updyke's rich father from drilling for oil near the beach, and to impress her, the boys plan to hold a ...
Condo developers plan to get rid of the Surf Shack, Murray's favorite place. Samantha thinks something should be done about it, and of course the brothers are always ready to help if it will impress her. They try to scam the developers by posing as corporate raiders but it doesn't work. Murray's dad tells him he will by the Shack, but only if Murray will give up surfing. Finally, the boys talk their father into buying it and putting Murray in charge. Also, Stads has to fight off the amorous advances of a guy whom she rescued from drowning.
The Lighthouse is losing business to another restaurant, the Aloha, and Peter can't figure out why, since their food is terrible. He takes his sons to the restaurant to see what the attraction is. They quickly find out: it's the floor show featuring the sexy "Coconut-a-Go-Go Girls." They also find out that Murray has been there 21 nights in a row. Business is so bad for the Lighthouse that Peter may default on a loan. Murray offers to use some of his trust fund money to help out.
Scott is restoring a 1965 Mustang and Samantha is spending a lot of time helping him with it, causing concern for Jason and Stads. To stop Scott and Sam from going to a car show in Santa Barbara, Stads and Jason make it look like the Mustang was stolen. Scott and Sam get wind of the plot, however, and turn the joke on them. When it turns out that Samantha can't go to the car show, Jason and Stads share a relieved laugh and then a kiss.
Samantha is chosen by fashion photographer Devon for a photo shoot but Jason believes that he's just hitting on her. Sam breaks a date with Scott for a session with Devon. Scott watches as the photographer puts the moves on other girls. Samantha is supposed to go with Devon to Paris. At the shoot, he tries to make his move on her, but Scott arrives with a rose in hand in time to rescue her. Samantha forgets about the trip to Paris.
Jason and Stads are dating but Jason is embarrassed by always being outdone by Stads in athletics, etc. A robbery is attempted at the Lighthouse while the couple are there. The lights go out and Stads knocks out the robber. When the confusion settles down, Stads gives Jason credit for subduing the thief. Jason begins to brag about his supposed heroics, embellishing the story with more and more fiction. Scott suspects what happened and asks Stads about it. During Jason's most outrageous press interview, Stads blurts out the truth. Also, Scott and Samantha are tired of ...
Scott and Samantha are getting serious about each other and are planning a getaway to Catalina, but before it happens, Scott's old girlfriend Megan shows up. The spark is still there between the two, since Scott's move to California was the only reason for their breakup. He tries to hide Megan from Samantha, but Sam sees the two of them kissing and breaks off the relationship with Scott.
Jason and Scott enter a bowling tournament against the reigning Malibu Lanes champ Louie. Jason raises the stakes by making a bet with Louie for $300: Scott's tip money. Before the showdown, Scott injures his wrist. Stads is ready to replace him but the bowling alley has a "men only" policy for the tournament. Stads disguises herself as a boy and under the name "Earl," she helps Jason win the championship. At the awards ceremony, the owner's daughter Melanie develops a crush on "Earl." Stads reveals her identity and she and Jason are disqualified.
Scott and Jason are desperate to make some money after they mess up supply orders at the restaurant. To do this, they put their own home shopping show on the public access channel. Murray, who has been painting signs, accidentally appears on camera in a paint-spattered plastic coat and immediately the show starts receiving calls for the same kind of garment. Bloomingdale's calls with an order for "Murray Wear."
Jason is jealous of Stads' hunky lifeguard partner Kip. Scott advises him to flirt with Traycee to make Stads jealous. Samantha advises Stads to do likewise with Kip. Jason and Stads argue while shopping for costumes for a party and the two break up. Samantha and Scott feel guilty about what they've done and try to maneuver the couple back together at the party, but mistakes happen and the two costumed brothers end up dancing with each other. In the meantime, Murray has moved into the Collins house while Peter is away, and his intense cooking and cleaning are about to...
Scott recognizes actress Jessie Sinclair at the Lighthouse, but he agrees to keep the news quiet. He invites her to his home and Jessie enjoys the freedom she feels there. Jason and Stads come by and wonder who Jessie is. After they sneak a peak in her wallet, they are determined to get a picture of her, which a local tabloid will pay $5000 for. They secretly snap a photo of Jessie and Scott, but the tabloid editor won't pay up until he gets some dirt to print about Scott.