In a remote rural town lived two men: Gyoromatsu Hashishita, renowned as a master of nighttime visits, and Senkichi Nitta, a novice. They would sneak into various houses and enjoy having intense affairs with all sorts of women around the town. One day, as usual, Senkichi was hurrying towards his new target house under the moonlight, but he was restless. This was because his target for that night's visit was Oyuki, the woman he was deeply in love with. A romantic porno depicting the fate and hard-ons of these genius nighttime visitors.

On the advice of their horoscopes, a scenario writer, a producer and a director take a working vacation to a hot spring in the hopes of finishing their porn script. For the next week, the three men conduct interviews with many young women, seeking to discover their next starlet.

Mr. Harry, who suffers from a "peanut sized" penis complex, comes to Japan to undergo a genital transplant operation, the first of its kind in the world. The operation is a success but Harry soon is involved into a shady plot related to his organ donor.