The Unremembered Empire -

: The introduction of the Pharos device on Sotha, which plays a major role in later lore, begins here.

Believing that Terra has fallen and the Emperor is dead after the light of the Astronomican vanished, Primarch founds a "backup" empire in Ultramar known as Imperium Secundus . He intends this to preserve humanity's future, though the act itself borders on treachery if the Emperor still lives. Key Highlights The Unremembered Empire

: Notable scenes include the Lion's tactical "hug" of Guilliman and the Space Wolf Watch Pack's interactions with the Primarchs. Reading Context : The introduction of the Pharos device on

is the 27th novel in the Horus Heresy series by Dan Abnett . It is a pivotal entry that consolidates numerous plot threads and focuses on the creation of Imperium Secundus . Core Premise & Plot Key Highlights : Notable scenes include the Lion's

: Much of the story revolves around the friction between the pragmatic Guilliman and the suspicious Lion El'Jonson.