Kim Jongin and Byun Baekhyun are partners in crime. Jongin does the running, Baekhyun does the clearing. Their life depends on each other. How will it turn out when the partnership is forced to abolish and forms a new one, with an unexpected guest?

Jongin is just a mere ordinary boy who came out of the box. But Soojung is not just a mere ordinary girl who lives next door. This journey of him had become more exciting, by the way...