"You think you're the only one playing games?" "You know nothing about me." "Try me, I can get you down on your knees begging for mercy."

"Catch me while you still can." Kim EunA, a girl who is still heartbroken, is going back to Korea Jeon Wonwoo, a boy who he regretted what he did, is chasing the girl he loves.

Wonho, the Devil, is making life like a living hell for EunA. But the actual Devil is EunA.

"Put your hands up, you're under arrest." "Wait, why am I arrested?" "For stealing." "What did I steal?" "My heart."

"I don't like making new friends." "Why?" "Cause I know that one day, either I leave them or they leave me."