(We were previously informed that this was no. 27, but the Your Choice catalogue lists it as Maximum Perversum No. 4 and so do the opening titles.)
Starts with flashbacks to part one.
German sound, but appears to be about a girl, Debby (Debbie van Gils), who is hungry for love and also something to do with a brothel. She is advised by Nicky Pearce.
There is a scene where she visits Suraya Jamal. A male enters and has sex with Suraya Jamal, including anal, while Debby watches. Then Debby joins in. Suraya gets her face very close to the action while Debby is fucked in the missionary position on a desk. The man cums over Debby's pussy. The cumshot is virtually invisible but he pisses on her pussy and into Suraya's mouth.
Debby then goes to another house and enters a room where her boyfriend (?) is having kinky sex with a woman, watched by Nicky Pearce. Nicky persuades her to leave the room and seems to counsel her, reminiscing about an experience of hers. In the flashback Nicky is at a table with two respectable looking men and a naked masked man comes in and fucks her on the table while the two men watch from a very close distance either side.
Later Debby appears to be taking the money of the clients at the door of a brothel until she gets so turned on she has to go and take over with the client she fancies most. One of the scenes involves two men, Yves Baillat and Willi Montana, administering an enema to a mature brunette. Another involves a male buggering a pre-op trans-sexual.