1. Horus Rising: The seeds of heresy are sown
Horus Rising details the rise to power of Warmaster Horus, Primarch of the Luna Wolves, the 1st Astartes Legion, after the Emperor appoints him commander of the Imperial military and in charge of the Great Crusade. Much of the focus is on the Captain of the Luna Wolves’ Tenth Company, Garviel Loken, as he becomes a member of the Mournival (an advisory body to Horus), and his involvement in campaigns against traitors and aliens at the close of the Great Crusade.