As Mike travels through various dimensions and timelines in search of the truth, he meets different versions of himself and encounters bizarre and surreal landscapes. He also learns about the history of the Tall Man, discovering that he was once a mortician named Jebediah Morningside who discovered a gateway to another dimension through his experiments with the dead.
Meanwhile, Reggie battles the Tall Man’s army of flying metal spheres and reanimated corpses as he searches for Mike. Along the way, he meets a woman named Jennifer who has a psychic link with the Tall Man and may hold the key to their ultimate defeat.
As the two storylines converge, Mike and Reggie confront the Tall Man in his lair and uncover the shocking truth about his ultimate plan for Earth and its inhabitants. With the fate of humanity hanging in the balance, they face their greatest challenge yet in an epic battle against the forces of evil.