*SG-1 is still mouring the loss of Daniel Jackson when Freyr arrives at the SGC with word that Thor has been killed in a confrontation with the Goa'uld, and SG-1's help is needed to rescue and Asgard scientist. The team travels to the Adara system and is transported to an underground laboratory, where they meet Heimdall, an animated and amiable Asgard scientist whose research into Asgard genetics is vital to the future of the Asgard race. However, Heimdall insists that they cannot leave. Thor is not dead. He is a prisoner of the Goa'uld aboard the mothership in orbit above the planet.
*Source: Back of card