A story that could only be found in JAV movies about a young couple living together with their close friend Moe Amatsuka. The three of them have been friends since childhood and have always lived together happily. Until one day, the man's wife leaves for a business trip abroad, and he stays at home with his friend. Since the wife is gone for a month, the man seems to be very lacking in sexual satisfaction, but Moe, being a promiscuous girl, takes advantage of these days when it’s just the two of them to try to steal her friend's husband.