Metro plot
Due to excessive construction work in the center of Moscow, a crack appears in the wall of a metro tunnel, right between two stations. In addition, a leak causes water from the Moskva River to flow into the tunnel. Hundreds of passengers on the subway are trapped. The gigantic tidal waves threaten to cause the subway tunnels to collapse, including the city above. Doctor Andrew Garin and his daughter Ksyusha are two of those imprisoned. Garin does everything he can to save the surviving passengers, including his wife's lover.