With no demonic threat let alone presence for centuries after the Dark Lords death, is the Slayer really needed on Earth... HIS Earth any longer?

Ancient demonic weapons have risen again, and are marching to a New World, and it is up to the Slayer to stop them.

For years the Doom Slayer has remained dormant in silent suffering. His tomb is found by a group of scholars with a young scribe who unlocks the way to awaken the Hellwalker in this New World. For better or for worse.