Hubert, Alex and Cathou are brothers and sisters, in their twenties, and share an apartment in a quiet area of the upper city of Quebec. Their little life without a story falls when, in the same week, two similar murders are committed in their neighborhood.

Suzie and Samuel have known each other since childhood. With their friend Judith, they form a friendly trio. Now in their mid-twenties, at the age when everything is possible but nothing is easy, they find themselves at a crossroads.