At Stalag 13, a German prisoner-of-war camp, Colonel Robert Hogan and his fellow cohorts are a subversive group with many hidden talents. However, a spy has been planted amongst the men by the Germans. And when he learns of the gang's subversive operations, "Hogan's Heroes" must act fast to discredit him.

Hogan's scheme to help a German baroness escape to London is thwarted by the arrival of a new prisoner of war--- Colonel Crittendon--- whose repeated bungled attempts at escape are wreaking havoc on Hogan's mission to spirit away the baroness.

The Germans' plan to build a synthetic fuel plant at Stalag 13 would spell disaster for Hogan's men and their important strategic subterfuge. So Hogan attempts to convince Klink that there's a massice oil supply under the camp --- and orders a phony Allied air raid on the camp as proof!

When a British submarine cannot make a planned rendezvous to pick up a POW carrying an example of an important new German weapon, Hogan must come up with a sturdy, seaworthy replacement. Can he convince Colonel Klink to construct the camp's new officer's club in the form of a yacht?