15-year-old Soo-Yeon (Kim So-Hyun) is a victim of bullying at school. They target her, because her father is a murderer. Soo-Yeon has an ally in Jung-Woo (Yeo Jin-Ku), who always protects her from the bullies. Soo-Yeon and Jung-Woo are in love, but due to an unexpected accident they become separated. Now as adults they meet again through destiny.

Jung-Woo (Park Yoo-Chun) is now a detective and his first love has always remained in the back of his mind. Soo-Yeon (Yoon Eun-Hye) is now a rookie fashion designer who tries to have a bright personality, but still carries emotional scars inside of her. Hyung-Joon (Yoo Seung-Ho) is Soo-Yeon's lover, who appears warm and nice, but he will try to take vengeance upon Jung-Woo.