A suicide hotline worker is tapping the office phone lines for some reason and starts stalking and then initiates a sadomasochistic relationship with a suicidal teenage female client (all of which he records on videotape). After he is brutally murdered, a male co-worker views the tapes and starts investigating. He discovers that young mistress and the man's abused, drug addict wife apparently knew each other, and that the murdered man KNEW they knew each other. The plot here is certainly interesting for a sex film, if perhaps a little too much so for its own good (I defy anyone to explain the bizarro ending to me).
It continues to astound me how the Japanese have no problem showing a "17-year-old" character being tied up, "tortured with electric shocks" and even "having her nipple sliced open" (I'm using quotes because these things were obviously all fake--this IS just a movie.), but then they have such a problem with pubic hair(?!)that the actresses all have to wear panties during the (softcore)sex! As sleazy as this movie sounds on paper though, it's also very well made like most Japanese "pink" films (I have to admit that the reason I detest their hardcore American equivalents is not so much because I object to most of the unsimulated content, but because the story, the cinematography, and acting are always so damn awful).
I still obviously wouldn't recommend this to people who aren't already fans of the "pink" genre (but then who else would be on this particular site?). You really need leave your moral outrage at the door and be able to appreciate the difference between fantasy and reality to really enjoy this, or any other, "pink" film. But if you can do that, this is interesting and worth seeing.