The first Aesir/Vanir war was the darkest time in Asgard's past - so dark it was seared from their history books. But now, rebels strike against Asgard, and a second Aesir/Vanir war breaks out! As Surtur's all-consuming fire rages across the nine worlds, Thor and Loki go on the run. Thor hatches an unconventional plan to stop everything burning, while a desperate Loki journeys into the heart of Surtur's fiery kingdom to