Ever since they met, the husband has deeply loved his wife Reiko, who remains beautiful to this day. However, perhaps due to age, he's been having trouble getting it up lately. If things continue like this, Reiko might lose interest in him. Driven by anxiety, the husband finally decides to turn to medication. Unfortunately, a drink laced with aphrodisiac is accidentally consumed by both Reiko and their son… In a room that isn't even hot, their bodies begin to sweat, and their wombs start to ache. Overcome by passion, mother and son open the forbidden door…
