Two investigators, Gabrielle and Clémence, unite to solve a series of murders involving raven bones as a signature.

When bodies start turning up with a raven bone stuck in their throats as a common signature, two tough investigators, Gabrielle and Clémence, must team up to solve the crimes that are shocking the province... and the world. Circumstances will force them to reveal themselves to each other, forge an undying bond and question what is real and what is not.