Kaoru, who divorced her husband, raised Yuki by herself. She worked so hard that she didn't feel sorry for her, and she went on to college. Before she knew it, Yuki was at the age of graduating from university, and she had a job offer at the city hall. While Kaoru was relieved to take care of her child, she lost her goal in life and was spending her empty days. invited to Kaoru and Yuki set off on a graduation trip just the two of them.
