A young Corsican is obliged by a tradition of vendetta for his late father, to kill the uncle of a girl he loves, because that man was the murderer. His search for vengeance leads to being pursued by the police and a tragic fate.

Denise lives with her grandparents on a farm and secretly meets Robert. When she tells her grandparents that she wants to marry Robert, they refuse outright, so the two lovers will have no choice but to elope and marry in the nearby town. On the eve of having a child, war breaks out and Robert is mobilized.

A picador, an already mature man, keeps secret his love for the young orphan he raised. But she falls in love with a young picador...

Two police inspectors track down a mysterious criminal who signs his crimes with a fiery triangle. When they have just discovered an accomplice, one of the police officers, in love with the young girl, is shot dead. His colleague will then have only one goal in mind.