A young boy is hired as a lift attendant in a grand hotel when his mother dies. To fulfill his dream, he takes part in a competition organized by the manager, and wins 1st prize: a two-day stay in one of the princely suites. He wants to share the experience with his young girlfriend, the florist, but discovers that she has betrayed him and returns to her elevator.

A discredited police inspector is given a second chance, in the form of a dangerous assignment. Chosen because of his uncanny resemblance to a Lt. Revere, the inspector impersonates him in order to penetrate a group of mercenaries with orders to assassinate its leader.

Albert is an eccentric inventor of missiles who comes under fire from his investors when his first prototype explodes. Even his sympathetic mistress has her doubts, as Albert lashes out in a verbal tirade condemning those of little faith in his genius.

Renee Saccard is a pampered, selfish young wife of a middle-aged Parisian businessman who falls in love with her stepson but is driven to the point of madness when her husband tricks the stepson into betraying her.