A lame doctor (Liam Neeson) finds a cane inside a mysterious cave. When he strikes it on the ground, he realizes that the cane transforms himself into the Norse god of thunder, Thor, banished to Earth by his father Odin (Sean Connery) and turned into the doctor, Donald Blake, until he could find the cane, which transforms into his hammer. He realizes his brother Loki (Bruce Campbell), the Norse god of mischief, is wreaking havoc on both Asgard and Earth. Blake must use his Nordic powers to stop Loki and save the one he loves.