Jung Hajun, an assistant at the Seoul Central District Prosecutors' Office, nurses a secret crush on a colleague: the agency's star, the handsome and brilliant Prosecutor Hyun Juhyeok a man so captivating that even defendants fall for him.

But Juhyeok has a secret of his own: He is homophobic. He is a man Hajun can never, ever approach.

Then, late one night, Hajun accidentally meets a man who claims to be Juhyeok's twin brother. Their features are perfectly identical, but the man's constant smile, tone, and overall atmosphere are distinctly different.

"Wouldn't it be better to sleep with me? I'm interested in you, and I look exactly like Prosecutor Hyun."

The man, smiling brazenly, issues a tempting proposition:

"This face can give you delicious sex, and I'll even play the role of Hyun Juhyeok. You wouldn't possibly reject that, would you?"

Naturally, Hajun had no reason to refuse.