Summer has come again this year. Having just finished moving, Hisae and her son Kenichi are busy wiping away sweat and unpacking their belongings. The two of them are reminded of the hot and humid memories of the summers last year and the year before when the air conditioner broke down. "This house is fine because the landlord has serviced it," Hisae confidently tells Kenichi, but... As expected, the air conditioner breaks down.