While her husband is away on business, Reiko goes on an overnight trip with her son. It was actually her son who invited her, eager to spend time with his beautiful mother. Reiko, long confined at home, gradually lets her guard down amid the liberating atmosphere of their rare getaway. Blushing yet excited, her son can't take his eyes off her stunning body—her proud I-cup breasts too tempting to resist as he hungrily starts sucking them. When he pleads to watch her masturbate, they venture deeper into the woods. Their bond intensifies as their relationship takes an increasingly intimate turn, deepening the forbidden connection between mother and son.