Atsushi arrives at a soapland, but the soapland girl who greets him with hands folded in prayer is none other than his stepmother, Riko! The two freeze in their tracks at this terrible encounter. Using her wits, Riko makes an unexpected proposal to help them get out of this dire situation that could lead to the breakdown of their family. "I promise I'll quit the shop completely today, so please, Atsushi... be my last customer." Is this an attempt to keep his father quiet, or is it just a case of desperation? What will Atsushi choose when faced with this unexpected seduction from his stepmother, Riko?