David 'Becker' finds himself being forced to dig for gold in a mine for an escaped con and a former prison guard as one of their 'slaves'.

It's been two years since his last transformation and David 'Banion' has developed a new gamma transponder at the Joshua-Lambert institute that he hopes will cure him of his inner monster forever. But when a former student unearths the frozen tomb of an ancient Norse God, the Mighty Thor is unleashed upon 20th century society. Both Hulk and Thor initially clash, but later become allies to save both the transponder and the woman Banner loves.