A nobleman decides to join a traveling group of actors to be with a girl he admires, but ultimately must rescue her from bandits

Father-and-son lion tamers, Rabbas and Léo share a mistress - Rosita, the " lovely bitch " of the film's title. She is as wild as their lionesses and, in a single night the father is injured and the son attempts suicide. Only when Rosita leaves the circus can things get back to normal.

A dying father helps his young daughter carry an imaginary mission into space in order to reunite her with her mother; which leads to an unimaginable revelation.