The Mighty Thor, disgraced by his defeat at the hands of Hercules last issue and humbled by the loss of half his power, wants only to hide his shame; Jane Foster seeks to comfort him by confessing her love but chooses to flee. Jane tries to follow but an auto accident nearby claims her priority as a nurse—and Thor is gone. Soon he is on a lonely mountain top, brooding over whether he is worthy to retain the mantle of Thunder God….
In Hollywood awaiting the arrival of Hercules to star in a move about himself, the sinister film producer Pluto is revealed to be the actual Greek God of the Netherworld. He has enlisted Hippolyta, Queen of the Amazons to aid him in his scheme to entrap the hero into signing an unbreakable Olympian Contract….
Odin, looking down on Thor from his throne in Asgard, regrets the harsh punishment doled out to his wayward son. He wants Seidring the Merciless, to whom he granted the Odin power in order to carry out the sentence to restore Thor’s strength. But Seidring, warped by the Odin Power, uses it instead to defeat Odin and proclaim himself the new overlord of Asgard. Balder leads the warriors in opposition to the newly-minted tyrant…..
As Thor ascends the Rainbow Bridge, he discovers Heimdall imprisoned in a force field; moving on his finds all the other mighty warriors rendered helpless by magical means. He then comes face-to-face with Seidring, who tries to enlist the God of Thunder on his side but Thor refuses. The villain then unleashes the fury of the Odin Power and Thor evades crashing planetoids, is trapped in a bubble of liquefied wolfsbane, knocks back flying rocks, yet remains standing. Seidring then plans to send Thro to Limbo but the mighty Thunder God seizes the grip of the Odinsword, threatening to destroy the universe unless the evil one surrenders. Seidring yield and restores the Odin Power to its rightful owner. Odin comes on the run and finds his noble son to have finally collapsed for his ordeal, and proclaims him the noblest Asgardian of all.