After a major accident, three youths are saved, but transformed by operations into cyborg detectives. Ken, Ryo, and Go are now members of the Metropolitan Police Department’s special team named “Armored Police Metaljack.” Transforming from ‘Jack Suit’ (cyborg) to ‘Jack Armor’ (reinforced power suit）, Metaljack crush the secret robot organization,‘Ido,’ but in the future metropolitan ‘Tokyo City,’ Metaljack’s battles against high-tech crimes have just begun...