他看守著神秘的魔法之門，為了追查受詛咒的復仇之書，他來到發生一連串警方未解謀殺案的小鎮，在當地魔法人員協助下緝捕到謀殺案背後的策劃者，但隨即發現有更深不可測的黑魔法在計劃著終結人類世界！他來得及阻止這場毀滅嗎？

The film takes place in Toulouse and tells the story of Jean, a 55 year-old policeman who discovers his son, Maxime, and his son's boyfriend hanged in a hotel room. The autopsy shows that he died from an overdose of GHB, just seven minutes after his boyfriend. During an evening organized by Maxime's friends, Jean discovers the club BISOU, where his son used to go. There, he meets Fabien. Trying to know more about what happened, Jean goes to the club several times over and is quickly welcomed by the Bisouers. Fabien becomes attached to him, and Jean starts mixing his mourning with the desire to discover his son's world.