Keigo's wife, Eri, lives with her father-in-law, Atsuro. Eri, a full-time housewife with no children, also takes care of Atsuro's first floor cleaning and meals. Atsuro, who had lived alone until they moved in together, ostensibly played an old man who had lost his energy, but in reality he was quite fond of women. It was a daily routine to look into Eri's panchira. Furthermore, Atsuro, who is no longer satisfied with just panty shots, starts secretly filming the couple's bedroom with a hidden camera...