Mia, a mother who is worried about her son who has moved to Tokyo to attend university, goes to take care of him once a month. - However, as they visit the place many times, their love for their children eventually transcends family love and develops into a relationship between a man and a woman. - "There's no way we can allow something like this to happen even though we're a parent and child. But I can't change the fact that I love that child. What should I do..." Even as she suffers from the conflict caused by blood ties, Mia begins to yearn passionately for her son. - Unable to stop himself, he decides to return to Tokyo.