After the failure of the Second War, the escaped Death Knights Talon Bloodmagic and Jazzy Soulbreaker coerced Neojo into figuring out how to open portals to other worlds. After learning that Gul'dan's skull had been obtained by the Bone Chewing Clan chief, Halkan Skullcracker, Neozu sent the Battlecry Clan to massacre his clan, capture the skull, and then plan his return to Azeroth. He then gathered the Thunder King Clan, the Bone Chewing Clan, and the Shatterhand Clan to serve him. He attempted to steal more ancient artifacts in Azeroth to help him open new gates of darkness. He stole the Jeweled Scepter of Sargeras and traded it to Alterac for the Book of Medivh. He then stole the Eye of Dalaran from the rebuilt cross island. Having gotten enough treasure to return to Draenor, Neojo cast an evil spell to open several chasms in the sky and led his followers away from the burning Dalaran, abandoning the Battlecry that stayed in Azeroth and the clans of Shattered Hands and Blood Cave in Draenor. But the failure of the spells not only tore the world of Draenor apart, but also thrust Neozu himself into Kilgardan's grasp. Neozu remembers that the pact of blood he made so long ago has not gone away. Kilgardan tells Neozu that he will soon fulfill the demon's dream and that he will pave the way for the return of the Burning Legion! After imprisoning Neozu's soul in the cold, Kilgardan reveals his plan to the bodyless shaman. To imbue his soul with amazing powers, transforming him into the sinister Lich King, Kilgardan tells Neojo of his plan to return him to Azeroth so that he can wreak havoc there, spreading the plague and destroying human civilization forever with death and fear. Every soldier who dies under this apocalypse will be brought back to life again to serve the legions of the apocalypse as a member of the Undying Legion.