The eve of the Christmas holidays and the year 2000. A few days earlier, "The Erika" sank off the coastline of Brittany.
Martial is in a hurry to leave the courthouse, having promised to pick his son up from school. As the parents cross the schoolyard, they hear a series of explosions. When a teacher comes running out and collapses in a pool of blood, Martial realizes what is happening. Risking his life, he manages to reach his son and get him to safety, or so he thinks. His life has just been irrevocably turned upside down.