Tina, an old lady and detective stories buff, moves to town in the house of a god-daughter of hers whose husband is a private dick. She thinks she will be able to help him with his inquests. He does not agree with her and tries to discourage her by any possible means.
Marco, returning home to Livorno after having spent eight years in prison, finds his wife Giovanna married to another man, who the son believes is his real father. He decides to commit suicide but then he meets Elisa, who dissuades him and he begins to live with her and her father.
In 16th century Italy, mercenary Marco is hired by cruel duke Astolfo whose unjust reign is threatened by the notorious outlaw the Red Mask.
