Thor and Loki come across a pair of storm giants attacking the gateway from Asgard to Olympus. During the ensuing battle, Thor is accidentally transported to the fabled land and finds himself in combat with the mighty Hercules with neither party willing to back down. After a titanic battle, Zeus stops the conflict and proclaims them both worthy allies and friends. Thor is sent back to Asgard and Zeus closes the passage forever.; Loki escapes from his prison in Asgard and comes to Earth to get revenge on Thor. The trickster hypnotizes him to help make mischief, but Thor’s transformation into Donald Blake frees him from hypnosis, allowing him to defeat Loki and return him to Asgard.; While on a medical mission to India, Dr. Blake becomes Thor to repel a Chinese attack. In order to fight Thor, a Chinese scientist irradiates himself to gain great power. He fights Thor in New York, and nearly defeats him, but Thor blows him back to China, creating a nuclear explosion.; An evil scientist forces Dr. Blake to help him with a duplicating machine by kidnapping Jane. The device duplicates Thor, but cannot duplicate his magic hammer, allowing Thor to defeat the duplicate. Dr. Zaxton accidentally duplicates himself and falls to his death, leaving his good duplicate to take his place.; Thor battles the Lava Man, a monster created by Loki who claims all the dry surface of Earth for his people. Odin forbids Thor to love Jane Foster, leading to her leaving her job as Dr. Blake's nurse.