On a rainy night, Seo-yu was standing on the Mapo Bridge to die.
Unlicensed and underage, Seong-hyeon is surprised to see Seo-yu and had an accident.
In order to hide this fact from his brother, Seong-hyeon
proposes to lie to his older brother Seong-hoon in return for 3 million won to Seo-yu.
However, Seong-hoon does not believe Seo-yu and Seong-hyeon's words, and in the process of
revealing the lie, he falls in love with the charm of Seo-yu , who does not know where to go.
Seo Yoo, who has low self-esteem, thinks that there is no way someone like Sung Hoon can like him...

“It’s more foolish to think that your sex partner might propose to you… .”
"how… I thought I didn't know where I was going. I was in love.”

Will Seo Yoo be able to be happy with Sung Hoon?