The universe presented in the story diverges in late 1943, when a number of bright lights appear over
Nazi-occupied Europe. Intentionally or otherwise, the slaughter of the death camps has been used to summon the
Æsir, the Norse gods.
Nazi Germany quickly allies themselves with the gods and uses a magical barrage of
cyclones to cripple the
Allies at the
Normandy landings. The extended war has a significant impact on human technology; by the 1950s, the
U.S. military has a crewed spy satellite. The first third of the story takes place in 1962. Although at one point the Americans dropped a
nuclear bomb on Berlin, killing Æsirs
Muninn and
Heimdall, the Allies are slowly losing the war. By that time, the Nazis had already conquered Great Britain, Africa, and Russia, among other territories, and invaded Canada. It follows
OSS Captain Chris Turing, who is part of the team which is going to attack
Valhalla (located near
Gotland on the
Baltic), entering it through an airlifted submarine, with the aim of delivering a
hydrogen bomb payload, while what remains of the
U.S. Navy's surface fleet attempts to distract the Nazi and
Norse pantheon forces. Turing's team is accompanied by the trickster Norse god,
Loki, who apparently works against his fellow Æsir. Back in 1943, on the night they arrived, Loki used his magic to whisk hundreds of thousands of
death camp internees to safety in
Persia. Loki, who until then has only given humans some small hints about his and Æsir's true nature, allows Turing to ask him three questions. Loki answers the questions asked, and in one answer mentions how he does not think that he is older than Chris and also implies that the Nazi extermination camps were established for reasons other than for "Nazi racial purification", but refuses to answer any further questions to clarify this. The group arrives at Gotland, and during the operation, Loki disappears as Æsir forces led by
Thor defeat the troops. The American government had assumed the Æsir were alien invaders, but later during the mission, Thor and Loki reveal the secret of how the Æsir were brought into being, namely that the Nazis used death camps to
fuel necromancy on a massive scale to summon them. The Æsir tell this to their human prisoners as they are about to die, assuming they would never have the chance to let anyone else know the truth. Although the mission's primary objective is a failure, and Valhalla remains standing, Turing manages to destroy
Odin's Spear, inspiring human resistance, as his deed is seen by Æsir's human servants who spread the news of it to others. The protagonists of the second part of the story are Joe Kasting, an American meteorologist-drafted-soldier by the Nazis, and an SS officer narrator, who once witnessed Turing's act of defiance and secretly harbors hopes that Æsir and other mythical beings could be destroyed and humanity saved. The second part of the story takes place years later, by which time the Nazis have already conquered North America, while their allies from the
Empire of Japan, aided by their
Shinto pantheon, control parts of Asia. Although the United States has become part of the Nazi domain, a war of the supernatural continues as knowledge of necromancy spreads throughout the globe. The surviving nations of the
Southern Hemisphere have learned how to summon their own "gods", and each side slaughters millions to summon mythological beings who can fight to kill the other nations' gods. As a result of "Asian faith and African desperation... and all the madness of the tropics", the multiple gods of the developing world are given form through human sacrifice (hence the title of the novel, "life eaters"), banding together and fighting the Æsir (who prefer the colder regions). As the Tropicals advance, they burn the Arabian oilfields, leading to
global warming. With the potential of the Æsir creating a
nuclear winter to counter the global warming, the remaining free humans (including underwater-dwelling survivors of the Allies, and Abrahamites, a necromancy-averse alliance of
monotheistic religions centered around the Middle East) attempt to prevent the gods from destroying the world as Loki schemes to fulfill the
Ragnarok prophecy. The latter is revealed to be related to the use of
Yggdrasil as a space elevator connecting to a space habitat, where the Æsir want to shelter a few human survivors (for most Æsir, "brave warriors", but for Loki, the "clever" humans). The human protagonists, however, defy the Æsir's plans by stealing energy from Yggdrasil, briefly transforming Kasting into a new deity, who then renounces his new powers, transferring it back to Earth, hoping to strengthen the planet's natural environment against the predicted "weather war". == Analysis ==