The Ace of Hearts pop-up window tore apart reality, and Lu Chen was dragged into a midnight campus card game. The shadow will devour those who turn back, the graduation photo hides the secrets of 13 missing people, and there is a countdown to death in each round. When playing cards become the chips of life and death, he must tear open the cracks in the rules through lies and devouring - after all, the last one left on the card table can touch the fateful Joker.