Jang Do-jun (Kim Seok-hun), an emotionally broken former agent, dutifully serves in the subway police squad after a tragic operation that cost him the love of his life and left him disgraced in the view of his superiors.

However when an ex-government agent (Park Sang-min), out for revenge, kills the mayor of Seoul and hijacks a subway train full of innocent passengers Jang risks his life to save others in the face of extreme danger to thwart the terrorist holding the city hostage!

One of the most expensive South Korean movies ever made and starring Bae Du-na, darling of the current explosion of Asian cinema, 'Tube' is a non-stop action movie that will keep you glued to the edge of your seat!