Whilst being transferred to a psychiatric hospital, a ruthless serial killer Gassot makes a break and goes on the run. He arrives in Marseilles, intending to escape abroad. Here, he falls for a young prostitute, Gerda.

In Italy in the 60's it is difficult to get a divorce. Carlo gets a visit from his Swedish wife, but he is already remarried. Every time he meets a new woman, he vanishes away from the last wife.