Seiji is a permanent part-timer. He has been dating a girl, Ai, for two years and he is now thinking about marrying her. But one day, he has a traffic accident and breaks his leg and becomes hospitalized. Ai promises, with a smile, to visit him every day. But their relationship gradually changes after his hospitalization.

A real estate broker who hit Seiji. A guy at the same hospital room. A handsome doctor in charge of him. A co-worker at his shop. A nurse who is his ex-girlfriend. Various people cut in on Seiji and Ai's relationship. Will they be able to overcome it and keep their relationship?