Eun Hana, who has been writing books on romance since high school, one day has her door knocked by someone she never wants to see: Kang Dae, the person who bullied her in high school. Kang Dae asks Eun Hana to write a book for him because, unbeknownst to Hana, Kang Dae realizes that her written stories come true. Upon this realization, Kang Dae asks Eun Hana to write a story about his ex-girlfriend who left him.