Puzzle Grand Format

Ilan and Chloé are two young treasure hunt enthusiasts who have dreamt for years of participating in the ultimate game, with unknown rules, an unclear entrance, and even uncertainty about its existence. When Chloé reappears in Ilan's life a year after their break-up, informing him that she knows how to play the game, Ilan has completely distanced himself from the world of games and lives isolated in his parents' house, who are officially dead but whom he believes were kidnapped due to their scientific research.

After going through a first treasure hunt in Paris, the two friends are finally selected for the game. When the players discover the first corpse, when Ilan finds information related to his parents' disappearance within the game, it becomes increasingly difficult to distinguish between the game and reality.