Ash tackles a bomb that is not considered vital with a new fuse extractor that doesn't work properly. New Lieutenant Machin is placed with Ash to get some on-the-job training. Major Francis criticises Ash after a patriotic magazine article profiles 347 Section.

Ash is ordered to take a defused bomb direct to a scientist working on ways to get around the booby-trap timer.

A bomb under a nightclub provides 347 Section with an opportunity for a little recreation. Ash admits that he is smitten with Susan.

Ash and Susan go off for a quiet weekend away but Ash is recalled to deal with an unexploded bomb and Susan returns home to find her husband waiting for her.