Col. Hogan is less than thrilled when he is assigned to help an obnoxious American general flee Stalag 13 - and the secret plan, involving a prisoner swap, winds up as trying and difficult as the arrogant escapee himself.
When the gang's hidden cache of money - needed to purchase a secret map - goes up in smoke, the men of Stalag 13 must come up with a way to replace the cash - and decide to pull off a bank heist in the nearby town.
Hogan and his men are determined to create chaos during some staged war games a ruthless Nazi colonel has scheduled near Stalag 13. So what do you suppose would happen if the fake explosives planned for the exercises were somehow replaced with live ammunition?
Hogan nixes a mission to destroy a synthetic fuel plant because the caper is too risky...but he is overruled - and forced to participate in the scheme by the ploy's mastermind, a strong-willed determined female scientist.
Masquerading as German workers, Hogan and the crew have made elaborate and foolproof plans to blow a German cannon factory sky-high - but their plan backfires when Newkirk winds up being drafted into the German army.
When an important Gestapo official wants to defect, Hogan brings him to Stalag 13 - and convinces Col. Klink that the fugitive is Adolf Hitler in disguise...who is trying to elude assassins by hiding at the camp.
Capt. Kurtz, Gen. Burkhalter's brother-in-law, becomes the camp's tough new adjutant. What's worse, he's keeping a watchful eye on every corner of Stalag 13 and ends up getting in the way of Hogan's plans to blow up an enemy munitions train.
The bumbling Sgt. Schultz has unwittingly been conned into making a trip to Heidelberg as a courier for the underground, but after upsetting Col. Klink, the sergeant is ordered to remain grounded at the camp. How will Hogan and the gang win him a new weekend pass?
Lt. Claude Boucher's plane is shot down and he is brought to Stalag 13 to be interrogated by Major Hochstetter. Boucher refuses to give any information so Hochstetter employs the tactic of casting doubts on his fiancées honor. Hogan is worried this may get results so his plan is to smuggle the girl into camp to prove she is still loyal to Boucher.
Col. Klink's "no escape" record is jeopardized when Malcom Flood, a British escape artist, lands in Stalag 13 and intends to continue his impressive escape record - a plan likely to endanger Col. Hogan's scheduled rendezvous with an OSS agent.
When the Germans construct a new communications tower near Stalag 13 - one that is potentially deadly to the Allies - Hogan enlists a beautiful underground agent to help destroy the tower, with Kinchloe assigned to snap some incriminating photos of Gen. Burkhalter.
To improve the camp's inspection rating, Klink transfers in a stern German sergeant who quickly makes life miserable for staff and prisoners alike with his overly strict and unwavering adherence to all regulations. All want him gone.
A secret military document is mistakenly hidden in Col. Klink's topcoat at a party, and a desperate Hogan must nab the document because of both its value to the allies and because Klink will be charged with treason and replaced at Stalag 13 if it is discovered in his possession.
Klink becomes convinced that he is marked for assassination by a mysterious "Mr. X" after a series of close calls at the stalag. Could Hogan be behind the threats? Yes...but it's all part of a plan to masquerade as Klink in order to help a valuable underground agent escape the camp!
Winston Chuchill's right hand man Group Captain "Robbie" Roberts, who also happens to be a close friend of Hogan, is shot down, captured and brought to Stalag 13. However, it is all part of a Luftwaffe scheme to assassinate Churchill as Roberts is put in the cooler while an impostor is to escape and head to England to carry out the job. However, Hogan finds out what is going on and makes plans for the real Roberts to escape while the impostor stays in Luftwaffe custody.