 Reporter Tom Merrick stumbles across photos of various disasters - the Hindenburg, Titanic, Hurricane Hugo - all of which feature a mysterious stranger in the background. Merrick s investigation leads him to the Time Shifters, a group of thrill-seekers who travel back in time to witness similar calamities throughout history. Merrick desperately tries to avert future disasters - a plane crash, a subway crash, a bomb in an athletic complex - and protect the lives of his son and ex-wife.