Hae Na has a crush on one of the male teachers at her school. After a few drinks at a get-together with the teachers, she discloses her feelings to him. However, after she kisses him, she realizes it's Seo Won, the man she can never get close to.

Hae Na finds out that Seo Won is afraid of dogs. It complicates things as she has to get a kiss from him while she's changed to a dog. The vice principal brings his dog to work, making Seo Won panic. Hae Na secretly helps Seo Won so that no one finds out about his secret fear of dogs. Meanwhile, Yul witnesses Hae Na transforming into a dog.