Matt Fraction''s complete saga of Thor — from triumphs and tragedies of ages past to a bold new heroic era! Asgard is the target of a dark, destructive force from another reality. When Thor and Sif dive deep into the heart of the fractured World Tree, what they find attracts the attention of the Silver Surfer — and in his wake follows Galactus! But the most horrifying threat of all is the Serpent — who will make the son of Odin, and the whole Marvel Universe, know fear! Thor is fated to die — but can a team-up with young Loki stave off disaster, or will everything burn?