Summer Erotica: Mother is Watching / Sister is Watching / The Teacher is Watching

Setsuko Kurata, a school teacher in a rural town, visits the home of her student Tadashi Sasaki for a home visit. When Setsuko comes to Tadashi's house, the meeting is cut short, and the father, Tamotsu, kicks Tadashi out of the house. Alone, the teacher and the student's father lock up the house and plunge into a dubious carnal affair...