Do-A Han is secretly dating Seong-U Yu, the most popular guy on campus. To the outside world, they’re just acquaintances, but behind closed doors, they’re in a relationship. However, the illusion of a perfect romance is shattered when Do-A suspects Seong-U is harboring a dark secret. Enter Eun-Ho Yeon. He’s a mysterious student who seems to know something about Seong-U. As Do-A becomes increasingly entangled with Eun-Ho, her unofficial relationship is pushed to the absolute brink. On a campus fueled by twisted desires and shifting loyalties, how far will Do-A go to uncover the truth?