Three years ago, my son Kyosuke went to university in Tokyo and left home. Two years ago, his father gave up farming and went to Sendai for work, remarrying with Natsumi at that time. The stepmother and son only see each other twice a year during Obon and New Year's. This summer, they returned to the old wooden house without air conditioning, reuniting after a long time… This year's heatwave is more intense than ever, and Natsumi's lewd sweat drives Kyosuke mad, making him start to see her not as a mother but as a woman…
