The story of a madman who abducts women and taking them to his underground lair via manholes. This was really creepy at times, with some nice effects. The film had the potential to be just as disturbing as 'I saw the Devil' or 'The Chaser', but I didn't find the antagonist all that convincing and found he wasn't given enough to do. In fact, he even seemed passive at times when I expected him not to. There's also too many instances where victims hesitated for no reason while having an opportunity to kill or outwit their assailant.
In general this was a very good film, but believe it could have been greatly improved with stronger acting and faster pacing, and without the police being such idiots.