Typical cliche story of how a girl tries to get back at her ex-boyfriend. There's a small twist.

Kim Myoung and Jung Daehyun were the school's most loved couple. Everyone was happy for them. I mean who wouldn't be. Daehyun was every girls dream guy and Miyoung was every guys dream girl. One day, Daehyun decided to end their relationship. No reason. Or is there? Miyoung tries her best to get revenge at Daehyun for breaking her heart. What better way was to date the school's soccer player Yoo Youngjae. He placed second when it came to every girls dream guy. Youngjae was exactly like Daehyun, except he had more brains and more athletic. As Miyoung is making her plan "Get Daehyun Jealous" she finds out more things about Daehyun and Youngjae. She learns the truth about their break up. 

What could it be?