In the midst of a bloody conflict, Lady Sif, the valiant Asgardian warrior, watches her close friend die in glorious battle - but her soul is not taken to the eternal halls of Valhalla. Furious and petrified that the afterlife for her and all Asgardians is in peril, she enlists the aid of Brunnhilde the Valkyrie, the fearsome warrior entrusted with conveying worthy souls to the heroes' afterlife. Together they scour Asgard for answers. Rumors abound of towns being attacked by a horde of soldiers who cannot be killed. Someone is building an immortal army and stealing Asgardian souls... A worthy challenge for two of Asgard's mightiest champions!