During the traditional carnival celebrations, the dead body of a young girl is found near the small town of Bellinzona, in Southern Switzerland. The officers engaged in the case find themselves investigating crimes rooted in a past full of shadows.

Le directeur d'une prison exerce son pouvoir en passant par dessus la loi. Lorsque son royaume menace de s'effondrer, il va devoir mener une guerre des plus difficiles.