Cattani tries to settle the score with his enemies.

Police Inspector Cattani fights a losing battle to save his loved daughter's sanity, after what she suffered (see "La Piovra", original mini-series). He loses her, and his only trusted magistrate in the fight against The Octopus.

Cattani sets a trap for some of the key mafia players, resulting in the kidnapping of his only daughter.

Cattani hides the truth about his daughters disappearance from his wife and colleagues while at the same time fighting opposition in his work place.