The popular "Ji-Woo", with her adorable looks and bright personality. She receives confessions on a daily basis, but whenever she dates anyone, she inevitably gets dumped early on because of her tendency to obsess. No one seems to understand Ji-Woo. But one day, a transfer student named "Lee Jae" shows up and listens to her story. Ji-Woo gradually falls for her and develops a strange possessiveness towards Lee Jae... But where exactly does Lee Jae’s true interest lie?