Terror strikes the underground train system in Moscow in the form of a flood from a collapsed tunnel. The film follows a diverse group of Moscow citizens who find themselves trapped in the city’s underground rail network, their train derailed and virtually crushed after an aging tunnel collapses. Amongst this band of survivors is softly spoken surgeon Andrey (Sergei Puskepalis), whose wife is having an affair with the conceited businessman Vlad (Anatoly Beliy). Fate brings these two men together on the same doomed train, but there is little time to resolve their differences, as the tunnel begins to quickly fill with water, forcing them to work together with the others and find a way back to the surface.

The film is based on real events that took place in Samara in 1956 and known as the "Standing Zoe." During the holiday girl, without waiting her betrothed, removes the icon from the wall and Nicholas begins to dance with her, but suddenly freezes in place. This state continues for many months. Residents of the provincial town are frightened by this extraordinary event, which is cluttered with rumors and speculation. To try to understand the situation, there goes metropolitan newspaper journalist ...

Colonel Fox is in charge of a counter terrorism group that will now have the complicated mission to help the police to prevent a dangerous Chechen terrorist organization that wants to free its leader at any cost, even if it has to destroy the whole place.