Johan's people are in trouble, they have evolved beyond fertility and are on the brink of extinction. Johan is chosen to be among a group of Saviours, altered and genetically enhanced to have the ability to breed with females from the primitive twenty-first centruy earth. Johan sacrifices the life he knows to join the Programme and becomes a successfull breeder, using his superior intellence and physicality to persuade potential mates to join him in his enveavours to save his people.