They Strike From Space!
Following their battle against Pluto in Hades, Thor and Hercules return to Olympus, where a joyous Hercules announces that he broke his Pact with Pluto to rule Hades in the Death God's place, much to the chagrin of Ares. Thor leaves Hercules to return to Earth so that he may be reunited with Jane Foster. What Thor doesn't know is that Jane Foster, under the hypnotic suggestion of her roommate Tana Nile, is leaving New York City to points unknown so that she does not get in the way of Tana's plans for Thor.
Tana Nile changes into her true form, that of a member of the alien Rigellian race, who plan on attempting to colonize the Earth. Now in her true form, Tana calls in her Colonizer Commander to claim full rights of the planet Earth. She tries to refuse the colonizer ship to come to Earth an inspect the planet because she fears a battle will occur, however the colonizers disagree, believing that other than their feared threat from the Black Galaxy, they are invincible to any other foes.
Thor meanwhile, arrives on Asgard to ask his father if he would be allowed to marry Jane Foster, willing to forsake his own godhood in order to do so. To Thor's surprise, Odin finally concedes and will allow for Thor to marry Jane, and still remain the God of Thunder. Filled with joy, Thor rushes to Earth, however when he goes to Jane Foster's apartment he is attacked by Rigeillian Colonizers led by Tana Nile. Tana explains that they have laid claim to the Earth and intend to colonize the planet. When Thor tries to strike, Tana Nile uses her vast mental powers to subdue him, however Thor attempts to resist. As he is being subdued, Tana Nile explains how they intend on taking over the Earth by threatening to use a device called a Space Lock to move the Earth closer or farther from the sun, and wiping out the human race with the extreme environmental changes.
Thor continues to resist, and the Colonizers are forced to use a "Proton Coagulant Ray", encasing the Thunder God in a block of solidified Protons. They decide that since with the exception of the entity in the Black Galaxy, Thor is the only one able to resist their mind probes the Colonizers decide to take Thor back to their ship for examination. Before going they give Tana Nile a wrist-control device for the Space Lock and give her complete colonization rights to the Earth.
The Colonizers load Thor up into their ship and leave the Earth, however Thor manages to break free of the proton cube he's been sealed in. As the ship flies into space, Tana Nile activate the Space Lock device and encases the Earth in it's energy. Thor meanwhile, confronts the Colonizers in the ship and find that they have strength that matches his own. However, Thor manages to best them in battle, easily knocking them out.
With the Colonizers on the ship knocked out, Thor decides to allow the ship to continue its course to the planet Rigel, so that he may stop the Rigellians from taking over the Earth.