Okay, I literally just went wading through all the topics to find this because I just finished watching it and other people need to see this amazing clusterfuck.
The first half is almost exactly the original film, except the color palette is all the dustiest shades of green and yellow, and then nothing after makes any sense. There's an orgy (????), Iggy Pop weirdness, the weirdest voyeuristic phone sex but not phone sex thing I've ever seen, a Day of the Dead grunge mosh pit, a terrible child actor, and that one guy from the last episode of Firefly. Also, a Bai Ling rip off ('cause she was in the first film). Bonus points: David Goyer wrote the script and refuses to acknowledge it.