When a destructive space entity is spotted approaching Earth, Admiral Kirk resumes command of the Starship Enterprise in order to intercept, examine, and hopefully stop it.

On the eve of retirement, Kirk and McCoy are charged with assassinating the Klingon High Chancellor and imprisoned. The Enterprise crew must help them escape to thwart a conspiracy aimed at sabotaging the last best hope for peace.

Nester Patou, a naive police officer, is transferred to the red light district in Paris and organizes a raid on a dodgy hotel running as a brothel – inadvertently disrupting the corrupt system of the police and the pimps union, and netting his station superior. Fired from his job, Nester goes to the local bar for a drink and befriends a pretty young lady named Irma la Douce. Upon realizing she is a prostitute, Nester invents a crazy scheme to keep her from seeing other men.