When former undercover agent T. (Sang-Min Park) feels the government has done him an injustice, his answer is a simple one - he turns to terrorism and opts to take a crowded subway hostage so he can blow up 13 million people! Of course, behind every good terrorist there is always an old adversary from the past who in this case, comes in the form of Detective Jay (Seok-Hoon Kim). Jay has been beaten by T. in the past and since their last confrontation has become something of a rogue police officer who doesn't always do things by the book (now there's a surprise). So, as Jay finds his way onto the train which T. is steering towards dangerous construction works, its up to him to make his way to the front of the train, take out T, rescue the girl and be home in time for tea!

Plagiarizing popular action cinema is often the easy route to create an average yet enjoyable movie that, although clichéd at every avenue, can provide a familiar environment that the audience quickly warms to. However, it is also a path that is littered with pitfalls as even if you do manage to recapture the essence of the action, the lack of originality in the story or characters can leave the viewer extremely cold. Sadly, its the latter case when it comes to 'Tube', a distinctly average effort from Korea that is clearly inspired by numerous classic Hollywood actioners but fails to evoke the necessary charisma. The real errors here lie in limp establishment of the rather faceless characters and a plot that has been overworked so much now that it has become laughable and is completely devoid of the crucial suspense aspect. What it boils down to is just a case of going through the motions to provide a film that, whilst it isn't a crime against cinema, is nothing you would ever write home about.

Considering this is a production that is almost totally reliant on its action sequences, its surprising that even these do little to improve 'Tube'. Despite the presence of all the necessary ingredients, the movie doesn't ever appear to shift up a gear into overdrive and only comes across as raw and somewhat amateur. Explosions are the main component throughout and its fair to say that these do occasionally impress thanks to decent employment of the camera but they are never enough to satisfy on their own. As with most action films, its the shootouts and fights that really need to astonish to keep the pace alight but sadly the efforts in 'Tube' appear quite lethargic and the use of a handheld camera or train strobe lighting during each sequence is just far too off-putting.

'Tube' is certainly not the worst film ever made but it is ultimately as shallow and unsatisfying as the worst of the Hollywood blockbusters that it attempts to imitate. The action set-pieces will entertain and it does enough to pass the running time but it's throwaway entertainment to the extreme and is unlikely to remain etched upon the memory.