After fatally shooting a stalker, Parisian bar-maid Lea must live the life of the title reptile. At the time of the killing she was living with Francis, a much older American ex-con. After committing the murder, the fleeing and frightened Lea is saved by Paris paper boys Jean and Luc. Later she tells her sad story to hard-drinking Moskowitz, a middle-aged cop who secretly desires her. His unrequited love leads to tragedy. Meanwhile, Lea continues living with Francis, but also shacks up with Luc while trying to avoid the jealous cop.

Paula flees to Dunkirk to spend the end year celebrations. She is going to turn 50. She wanders around the city where she used to live, searching "men from her past".

Felicie and Charles have a whirlwind holiday romance. Due to a mix-up on addresses they lose contact, and five years later at Christmas-time Felicie is living with her mother in a cold Paris with a daughter as a reminder of that long-ago summer. For male companionship she oscillates between hairdresser Maxence and the intellectual Loic, but seems unable to commit to either as the memory of Charles and what might have been hangs over everything.

A film by Haydée Caillot with Any Bertin, Evelyne Marceau, Jacques Mandréa et al.