Suzy Bae, a 17 years old stubborn girl, insisted to find his biological father who she only knew from a photograph inside a diary which she accidentally discovered after her mother passed away. Armed with a passport, plane ticket, the rest of her savings, and her father's name, she courageously went to Korea and was determined to find her true self.

Kwon Ji Yong / G-dragon, a 27 years old famous musician, was planning to propose to Im Yoona, his girlfriend for the past 5 years, on her birthday. Unfortunately, things didn't go as what he has expected. On the night before her birthday, he watched with his own eyes that his future wife was having an affair with another man.

Now comes the big question... what will happen next to both of them?