"The Wager"
In a story that takes us back to Thor's younger days, a bet with Loki, to prove that his courage is not a product of his powers, results in the thunder god being stripped of his powers and joining a Norse expedition to the new world. To win the bet, Thor must complete the journey without using Mjolnir to restore his powers. Can he succeed? The loser of the wager agrees to exile from Asgard, and Loki has no intention of losing.