If you can imagine The Sum of All Fears transplanted to Asia, you've got a pretty good idea of this violent commercial thriller from Korea.

An extremist North Korean paramilitary group steals a new form of sub-nuclear explosive, planning to blow up a packed football stadium in Seoul.

Ranged against them are two secret service cops Ryu (Suk-kyu Han) and Lee (Kang-ho Song) who suspect there's a mole somewhere in their midst - whose identity, I have to say, is obvious from the get-go.

Writer-director Je-gyu Kang contrives some bravura fire-fights without ever quite making it into the Michael Mann class.