One reviewer described this as like "Black Belt Jones vs. The Galaxy Invader," but that only scratches the surface. Exhumed Films calls it "a Blaxploitation/Horror/Kung-Fu absurdist masterpiece," which they very correctly note "could only exist in the exploitation heyday of the 1970s." This gets a bit closer. You're really getting 3 or 4 different movies in one here. Possibly my favorite plot of all-time: a soul-brother karate instructor travels to Hong Kong to learn and master his art, where his buddy and protégé steals an ancient amulet which (unbeknownst to him) has the power to control a demon. The demon follows them home to NYC where it hides in the subway and begins killing innocent (and not-so-innocent) bystanders. Oh, and by the way? The amulet-stealing buddy is also a drug dealer with an ongoing vendetta against the local Chinese crime gang. That's at least 2 movies right there. The film now shifts gears to another buddy of the karate instructor, who is a cop investigating the subway killings. This portion of the film now plays like a supernatural/creature hunter/police procedural/X-Files kinda thing. Again, this could be a movie in its own right. Everything comes to a head when the black kung-fu-ers and the Chinese gang realize it might not just be their street fights that's killing off their members, and that maybe the cops are on to something when they say something is lurking in the subway, waiting to mutilate its next victim. This all ends with what is the trippiest final fight sequence since Zardoz. I would not have believed such a movie could exist had I not seen it. I *have* seen it. You should too.