Dr. Nat Sheehane dies at the hands of a street robber. His wife Mary, also a doctor, freezes her husband's head, hoping to someday bring him back to life. More than sixty years later, in 2070, in the laboratories of the powerful Ikor corporation, Dr. Sheehane is reanimated by transplanting his head onto the donor body of Dwayne Williams, executed for the rape and murder of a young woman. Nat awakens in a new, alien, hostile and dangerous world. But the future is inseparable from the past, and threads stretch from the past that will allow Nat to find the solution to terrible crimes and even reveal the secret of his own death...