Summer has come again this year. While nibbling on watermelon, Natsuko and her only son, Kenji, look back with laughter at last summer when the air conditioner broke and they experienced hellish heat. One day, Natsu and Kenji finally reach for the air conditioner remote control for the first time this year. However, no matter how much you press the remote control, the air conditioner does not respond at all. "Mom, the air conditioner broke again this year." Continuing from last year, Natsu and Kenji's sweaty summer vacation begins again this year.
