Follows Juliette, who after 15 years in prison returns to her hometown of Nancy. When she is reunited with her younger sister Lea, with whom she stays, Juliette finds herself imprisoned by another pain and secret. Meanwhile, Lea seems to lead a happy, calm and "normal" life with her husband Luc, two young daughters, many friends and an exciting job. Although siblings, Juliette and Lea are complete strangers to each other.
The cast includes Kristin Scott Thomas, Elsa Zylberstein, Laurent Grévill and Frédéric Pierrot.