Park Eun Shin, the kind-hearted cheer captain at Song SangYoo High, seems to have it all with her charming boyfriend, Lee Jae Vin, the school’s popular football star. But behind his smile lies a dark side—he's a bully and a cheater. When shy transfer student Hae Seung Jee arrives, Eun Shin is drawn to his quiet kindness. As Jae Vin targets Seung Jee, Eun Shin steps in, and their bond grows.
When she discovers Jae Vin's betrayal, Eun Shin feels free, ending their toxic relationship and finding comfort in Seung Jee’s sincerity. But their happiness is shattered when Seung Jee is shot and disappears for ten years.
Now, a decade later, Eun Shin seeks justice for the torment caused by Jae Vin’s family. When she unexpectedly crosses paths with a man who looks exactly like Seung Jee but insists he doesn’t recognize her, Eun Shin uncovers the truth behind Seung Jee’s shooting. As the past resurfaces, she must confront long-buried secrets. Will justice be served—and who will truly benefit from it?