After he and Hercules return to Olympus from a previous adventure, Thor sets off to Asgard to once again ask Odin for permission to marry Jane Foster. Thor expects Odin to deny his request again, but this time he is fully prepared to renounce his birthright as God of Thunder and Prince of Asgard.
At the same time on Earth, Jane has been compelled by an unknown force to board a cross-country bus out of New York. Back in the city, Jane’s roommate Tana Nile changes from her human disguise into her true form as a Rigelian colonizer. She has been monitoring Earth, and used her mental powers to send Jane away. Now that she has decided it is safe, Tana Nile contacts her home planet to claim Colonization Rights. The Colonizers dispatch an inspection team to Earth to authorize her claim.
Back in Asgard, Odin surprisingly permits Thor to marry Jane, without renouncing his heritage. Overjoyed, Thor speeds off to Jane’s apartment on Earth, but is repelled by a powerful force. It is the Colonizer Inspection Team inside Jane’s apartment. Thor bursts in, but he is quickly subdued and forced to his knees by Tana Nile’s powerful "mind-thrust." Tana Nile explains to Thor that she will take control of the Earth by surrounding it in a "Space Lock," an advanced type of Rigelian technology that surrounds the planet in a moveable force field. With the Space Lock up, Tana Nile will be able to move the Earth through space, burning it in a star or freezing it by moving it away from the Sun if she so desires. Therefore, the United Nations will have to hand control over to her to ensure Earth’s survival.
Thor begins to fight back, breaking out of the "Mind Thrust." This is unbelievable to the Colonizers, as the only other entity to ever break a Mind Thrust has been from the mysterious and dreaded Black Galaxy. The Colonizers then put Thor into a proton cage to be taken back to Rigel for study, so that they can find a way to defeat the inhabitants of the Black Galaxy.
Rather than fight back, Thor decides to let the Colonizers take him to Rigel so he can destroy the Space Lock that has been placed around the Earth. On the way to Rigel, Thor breaks out of the Proton Cage and battles his captors, taking control of the ship.