Set in April 1955 in Marion, Nevada, the series explores new heroes, villains, and mythology in the years just before young Henry Creel encounters the otherworldly substance that gives him his powers, including the story behind the mysterious rock he later finds in a scientist's briefcase in the Nevadan caves.

Undercover CIA agent Martian is ordered to return to London. When the woman he left behind suddenly reappears, their love is rekindled, entangling them in a deadly game of intrigue and international espionage.

Homeless and on the run from a military court martial, a damaged ex-special forces soldier navigating London's criminal underworld seizes an opportunity to assume another man's identity, transforming into an avenging angel in the process.