Tsuneo Suzukawa, a university student with a passion for diving and an interest in marine biology, works many part-time jobs to raise enough money to study overseas. But one fateful night, he encounters a girl in a wheelchair, forcing him to deviate from his current course. Kumiko, who wants to be called "Josee," comes across as unpleasant at first. Tsuneo, on the other hand, is persuaded by Josee's grandmother to accept the paid position as Josee's caregiver. Despite his irritation with her domineering approach, Tsuneo sees a chance to save more money to support his academic ambition. Tsuneo tries to resign after putting up with Josee's conduct for a while, only to uncover Josee's fantasies of exploring the outside world—to no avail.