War is coming and Guy Crouchback wants to fight. Despite his age, he joins the Royal Corp of Belvedere, a group of irregulars. While his ex-wife stirs up old embers, it's months of training. Crouchback is sent to Dakor, West Africa.

Crouchback returns to Britain, at the height of the Blitz, then posted to the Isle of Mull for commando training. Trimmer is now called McTavish and sent on demolition mission. Accidently lands in France and hailed a hero to avoid embarrassment.