Kim Min Gyu is a perfect boy,all the girls like him..Even the boys also like him since his out-going attitude..He is a good to the olders toonwhich means the teacher,his friend's parents and others..But,beside his perfect attitude,perfect figure,he also has something that he does not want anybody to know..But,his deadly-keep secret is known by a very noisy girl,Min Soo Yeon.She forces him to make a deal with her to make sure his secret is safe with her..

What is the deal that they do??Also,what is Min Gyu's secret that he want to keep so much??