A romantic comedy about a timid husband named Yeong-soo discovering the hidden past of his beautiful and perfect wife Hee-joo.

Je-In (Ha Ji-Won) is a mystery novel writer. She chases after a serial killer with her longtime friend Rok-Hwan (Chun Jung-Myung). Rok-Hwan is a detective. A handsome and mysterious man, Jason (Chen Bolin), appears in front of them. 

When Eun-soo gets lost in a country road, he meets a mysterious girl and is led to her fairytale ike house in the middle of the forest. There, Eun-soo is trapped with the girl and her siblings who never age. Eun-soo finally discovers a way out which is written on a fairy tale book. But the book tells a story of none other than himself!