Private Potts has to prevent a plot to assassinate Churchill.

Private Potts has to defuse an unexploded bomb.

When a looter is found prowling round Churchill's bunker, the finger of suspicion points to Potts.

Private Potts excels himself with the mishandling of top-secret orders, leading to a night in the Bloody Tower for General De Gaulle.

Colonel Witherton has been put in charge of catching an infiltrator in Churchill's underground headquarters.

Private Potts mixes up some papers, which results in Colonel Witherton being sent on a suicide mission.