A group of men from a London pub are going on a darts team outing to Boulogne. Various members of the party have different reasons for going and get involved in various adventures.

A captain is promoted by his company from tramp steamers to their flagship passenger liner. Although he is a thoroughly competent sailor ready to take charge of such a ship, he is less prepared for the social duties his new position involves, not least the way he in which becomes the target for all the unattached women on board.

Lucy Church, the sole witness to a fatal robbery, is struck by a passing bus and her life lies in the balance as the thieves wait for a chance to finish her off.

In wartime, a young officer is killed during a raid to kill a German general at the house that used to belong to his grandmother. Before he dies he talks about a treasure that was hidden there. Several years later, the members of that group are still together as a street band living in a cellar. The last of the gang, who was chosen for his skills as a ruthless killer, escapes from prison in a rampage of killing and, obsessed with the treasure, takes the gang to France to recover it.

Armitage runs a chemical company that is on the verge of producing a gas that causes temporary disability. Clearly the military want it but it is also sought by a group of Japanese. Both Armitage and Madam Greenfly hire different people in the same detective agency to guard the gas and steal it respectively... confusion, double crosses and hilarity ensue...

At the start of World War II, Cmdr. Ericson is assigned to convoy escort HMS Compass Rose with inexperienced officers and men just out of training. The winter seas make life miserable enough, but the men must also harden themselves to rescuing survivors of U-Boat attacks, while seldom able to strike back. Traumatic events afloat and ashore create a warm bond between the skipper and his first officer.