Join Thor and his family on a Titanic tour of the Ten Realms! Witness the ancient origin of Yggdrasil the World-Tree! The Thunder God leads a desperate battle against the relentless Mangog for Asgard! Learn how a foolhardy adventure in Nifflenheim led young Thor to be banished! Loki declares war on Midgard - and visits his childhood self in Jotunheim! From Svartalfheim, Dark Elf Malekith plots to unleash the Casket of Ancient Winters - and Odin recalls the ancient trip to Muspelheim that began his age-old rivalry with Surtur! Plus, Alfheim! Vanaheim! Nidavellir s role in the origin of Mjolnir! And the stunning revelation of the Tenth Realm of Heven! Collecting: Thor (1966) 157, 159, 233-234, 347-349; Thor (2007) 12; Thor: The Trial of Thor; Mighty Thor (2015) 12; Original Sin 5.1; material from Journey Into Mystery (1952) 97; Thor (1966) 400