Hogan and his men are ordered to deliver airdropped ammo to the Underground. When Carter makes a plan to help Klink manage the camp, Hogan uses it to get the ammo out to different locations.
Hogan faces a startling development: his captors are sending him to America to demand surrender -- with a super weapon supposedly supplied by the Russians.
Hogan must destroy an anti-aircraft defense system designed by a beautiful English woman who may have defected to Germany.
The Italian officer, who studied under Klink, helps Hogan photograph an anti-aircraft gun in Hammelburg.
Hogan's men plan to surprise him for his birthday by blowing an ammunition dump.