Miwa is fired from her part-time job, sentenced to stay in Japan, and dumped by her boyfriend. She sets off on a trip to the Sea of Japan to find the truth, but her souvenirs are rather dull, including a rather rude female friend. This time she takes her younger brother Harumi with her to her home town. Together with Sawada, a classmate of Harumi's and a close friend of Miwa's, the three of them spend a summer holiday that takes them back to their childhood. However, when Miwa takes a picture of the place where her house used to be, when she plays pranks at the swimming pool, or when she catches a cold and falls asleep, she thinks about her father who suddenly disappeared one day.

It's an August morning, with a still heat that clings to your skin. Jumonji's room, which is even more cramped and dirty than usual, is occupied by Torigai, a senior employee from his former part-time job, and a stray cat that Jumonji adores. Torigai's insistence that this room is covered in fleas because of the cat leads to the burning of a balsam, and the two, unable to stay in the room, decide to pass the time by taking a walk around the neighbourhood.