Several notables from the Chamonix region are found murdered in their homes. To move forward with investigation, police captain Thomas Delhaye decides to release Juliette Hémon from prison, imprisoned for a strangely similar case.

On a winter night in a ski resort in the French Alps, Mona, a young Italian seasonal worker, has locked herself out. She is struggling in the cold while looking for shelter. Her nighttime journey takes her near an unknown presence.

In a French thermal town, a man is found poisoned. His ex-girlfriend is arrested for the murder but her estranged cop daughter tries to prove her innocence which leads her much further than she could have ever imagined.

To escape the police, a father and his son are forced to find refuge in a summer camp for young adults with mental disabilities, taking on the role of an educator and a boarder. The beginning of troubles and a wonderful human experience that will change them forever.