Screen legends Christopher Lee and Peter Cushing star as rival turn-of-the-century anthropologists transporting a frozen "missing link" aboard the Trans-Siberian Express. But when the prehistoric creature thaws and escapes, it unleashes a brain-scarfing spree that turns its victims into the eye-bleeding undead. Can the crafty colleagues stop this two million year old monster, hordes of zombie passengers, and a psychotic Cossack officer before terror goes off the rails?