Home-design sales representative Tomohiro lives with his wife and their son. As his job involves houses, it is his motto to take great care of the family who live in the house. However, he has been working so hard that he has forgotten to cherish his own family. When he looks after a client who wants to leave her father-in-law in a nursing home, it reminds him of his grandmother whom he loved so much. Father's death, grandmother's struggle with disease, and home care - those were grueling times, but the memories have become invaluable for Tomohiro. He realizes his family is the most precious thing of all. On a day off, he and his family decide to visit his mother who lives alone in their old hometown.