A heroic age begins for the God of Thunder, written by acclaimed author Matt Fraction, as Thor's adventures take him across Earth, Asgard, and beyond! In the wake of SIEGE, Asgard must take its proper place as the Golden Realm, most glorious of the Nine Worlds of myth. But that means Thor's home isn't just a beacon - it's a target! So what happens to the Asgardians and the denizens of all Nine Worlds - including Earth - when a dark, destructive force from another reality comes on the warpath? Then, when the nefarious Grey Gargoyle sets out to attain godhood in Asgard, Thor must stand in the way of the dreaded villain with the power to turn his enemies to stone! Plus: Thor and Sif dive deep into the heart of the fractured World Tree to reclaim an artifact from beyond time and space - one that attracts the Silver Surfer's attention. And when a herald such as he arrives on Earth, his master, Galactus, is certain to follow! Collecting: Thor (2007) 615-621, 620.1; The Mighty Thor (2011) 1-6; Free Comic Book Day 2010 (Iron Man/Thor) 1