The Executioner, Asgard's most merciless warrior, is one of Thor's deadliest foes - but perhaps their strangest battle took place?on a pirate ship!? When Thor is called home, Nova the Human Rocket hitches a ride - only to find Asgard in danger with an imposter on the throne! When Thor and Valkyrie plunge into the Asgardian underworld on a dreadful mission, why do they bring Nova along? Odin decides switches his sons' weapons to see whether Loki is worthy of Thor's hammer! All this, and Thor's classic Silver Age debut! Collecting MARVEL ADVENTURES SUPER HEROES (2010) #6, #8 and #13; and material from MARVEL ADVENTURES SUPER HEROES (2010) #19 and JOURNEY INTO MYSTERY (1952) #83.