Gaspard and Marion are in love and enjoying summer in the south of France... until they stumble upon a lost cell phone. At first they decide to track down the owner... But the game takes a much darker turn when they find him dead, in a mysterious suicide ceremony. Next to him, lies a half unconscious girl, Audrey. With her enigmatic tattoo and her gothic looks, she soon lures Gaspard into Black Hole, a dangerously addictive video game.