Ever missed the last train? London, Midnight, on a cold evening. Unable to find a taxi, Kate (Franka Potente - 'The Bourne Identity/ Supremacy') heads for the underground. She takes a seat away from the crowd of late-night revellers and waits for the last train. Before long she drifts off to sleep and wakes to find everyone gone. She momentarily panics until another train pull in. She boards, unnerved that she's the only passenger, but relieved at last to be on her way. Halfway through the tunnel the train jerks to a violent halt. The lights shut off and the train is plunged into darkness. Kate screams...she is trapped in the dark...she is not alone...her nightmare has just begun!