We ended before the night began. Choi Yoona thought she'd seen the worst of Go Kyungjun when she broke up with him. Once, he was the boy who made her laugh until her ribs ached. Then he became the boy who made her cry, trading her for popularity, friends, and a reputation built on fear. Then the game began. Trapped with her classmates in a deadly game where every round demands another victim, Yoona has no choice but to work alongside the boy she swore to hate. But the more the game twists them, the more the lines blur between anger, fear... and the feelings she tried to bury. In this game, trust is a gamble. And Kyungjun might be the only person who can save her ...or the one who destroys her first.