After nurse Nami (Mayako Katsuragi) is assaulted by two of her patients (who are clearly feeling a lot better!) she flees to her photographer boyfriend's apartment where she discovers that her beau has been doing more than just taking snaps of his sexy model. Distraught, Nami runs away, only to be hit by down-on-his-luck stockbroker Tetsuro Muraki (Naoto Takenaka), who isn't paying attention to his driving.
Believing Nami to be dead, Tetsuro bundles the unfortunate girl into his car, and after parking up to decide what to do next, decides that a little sexual gratification is in order. Nami, however, is still very much alive, and waking up mid-grope, opens the car door and legs it.
Testuro pursues and catches Nami (but only after she has beaten him over the head with a piece of wood), and then attempts to rape her, but experiences problems in the trouser department. Eventually realising that his behaviour has been a tad out of order, Tetsuro apologises and begs forgiveness, buying Nami food and taking her to a motel for a bath. It is there that the pair form an unlikely bond and gradually fall in love. The next time Tetsuro gets Nami's knickers off, it's consensual and performance issues are a thing of the past.
Thematically, Red Vertigo is par for the course for the Angel Guts series, but the depravity actually depicted on this occasion is far more sporadic, the action interspersed by prolonged and rather dreary scenes where very little of interest happens. This probably wouldn't matter too much had the 'good bits' of the movie been sufficiently bizarre or if the lead actress had been an absolute stunner, but this one remains rather restrained in terms of dementedness, and Katsuragi isn't quite as attractive as previous actresses who have played Nami.
A real downer of an ending makes the film an even less enjoyable experience.