Kim Hee-won once believed in love, but the end was a betrayal. Bae Jun-hyuk, the man she risked all of, sold her information to his enemy in order to protect his fake identity. Eventually, Hee-won was brutally murdered as she was targeted for revenge. Faced with her body, Yoon Seung-woo followed her to death after being enraged and killing all who killed her. But Hee-won opened her eyes, back in her senior year in high school.