Firstly, this film has got nothing to do with The Toxic Avenger which another reviewer here seems to think it should have been (?), Im really not sure why that is. Maybe he just reads a movie title and decides what its going to be about by that, but I really don't think thats a smart way to approach cinema and I (for one) am so glad it wasn't some terrible flick by the cheesemongers at Troma as its miles above their output in terms of quality.
The film opens with an outbreak of a water-born disease where a sewage system worker (hes known as the septic man as its a logo on his van) is approached to find the source and deal with it given an offer of a large sum of money. He enters the underground tunnels soon after, and quickly finds himself locked into a tank underground, where his problems really begin.
While the singular elements of Septic Man may not be original on their own, what is original and fresh is how they're strung together. Be advised that this is NOT a horror comedy, in fact its quite dark, twisted, and disturbing at times, with a grim harsh plot running most of the way through. Its written by Tony Burgess, who also wrote the fantastic Pontypool (2008) and its likely if you found that slow going then this movie might not suit you either. Luckily many horror fans have progressed beyond watching a man in a mask chase teens through a forest however so we welcome anything with a modicum of the different. And I loved this film, in fact its quickly moved into my top ten horror films of the year along with the likes of Under The Skin, Found, The Borderlands, Dead Snow 2 etc.
I suggest you go into Septic man not thinking you know what its about, and if you have the ability to watch a film while enjoying a build up in tension and story without it all being laid on a plate for you I think you'll love it. I have to say I was very pleasantly surprised. There have been so many mediocre horror films this year (Lord of Tears, Cross Bearer, The Cemetery etc) that its great when something comes along you thought might just be another. Septic Man is indeed a great new horror film that's an asset to the genre and one long standing horror fans (30yrs for me) will enjoy.