A married man brought a college girl, Mio, to a hot spring resort. It was an obscene inn famous for its peep baths and orgies. Mio was brought to the inn without being informed about it. As soon as she arrived at the inn, the adulterous man gave her an indecent order. It was a natural thing for two adulterers to do, but the real purpose of the man was to train Mio.
