This is a story about a girl that only graduated from high school and only entered the university need to marry a guy who only broke with his girlfriend. After they married for 9 months, the guy's ex girlfriend came back and wanted to have him from the girl.

Seohyun is adopted by the rich Kim's family. Recently, she is living with her adopted sister, Hyoyeon, and her husband, Doojoon, a football player also a rich business man. She helped Hyoyeon with Hyo's cafe.

Yonghwa came from a rich family. He broked up with his girlfriend, Shin-hye, who attends to the same university with him. He thought that Seohyun from a normal family.

Shin-hye asked for seperation with Yonghwa because she fell in love with another guy. when she know that the guy hated her, she wanted Yonghwa back.

Kyuhyun is the best friend of Seohyun. he always with Seohyun. He is the president's son. He's humble and liked Seohyun.