Jiuchang (Bong Tae-gyu) is an ordinary-looking man without a job and penniless. When he was extremely hungry, he saw a wallet. While he was enjoying a big meal, the owner of the wallet, Yani (Jung Ryeo-won), came to look for it. Jiuchang met Yani in this way. Yani is a cute and gentle girl who often does unexpected things. It turns out that she can't forget her ex-boyfriend, so she becomes like this. But soon Jiuchang found that Yani would unconsciously become another person, very rude and vicious. Jiuchang consulted a friend who is a doctor. The reason for this may be that he doesn't want to remember some unpleasant memories. In this way, Jiuchang gets along well with this two-faced girl, and Jiuchang, who has never been in love, falls in love with Yani. A news report made Yani's true identity surfaced, which surprised Jiuchang and made him at a loss.