The 2000 K-141 Kursk submarine disaster is followed by governmental negligence. As the sailors fight for survival, their families desperately battle political obstacles and impossible odds to save them.
Loïc Le Tallec has never been a very good father to Yann, who has just died in a road accident. Collapsed, he tries to find the identity of the person who had his son's heart transplanted. He discovers that it is about Hugo, 20 years old