In the wake of a nuclear disaster, a select group of survivors makes it to a safe bunker, courtesy of a mysterious organization called The Cooperative. As they suffer under the strict rules and severe punishments of the governess, Michael Langdon arrives to decide which of them deserves to be saved.
Michael's arrival turns things upside down in Outpost 3 as various residents plot against each other in order to ensure they are the ones he picks to save. Timothy unwittingly reveals a secret about Ms. Mead.
As Michael's demonic powers are revealed, Venable and Mead resolve to kill everyone after Venable discovers that Michael didn't pick her for the Sanctuary. The Supreme and her coven of witches arrive at the outpost to resurrect Mallory, Dinah, and Coco.
A flashback reveals how Michael came into his powers with the support of the Hawthorne School for Exceptional Young Men whose chancellor hailed him as the first male Supreme. Michael saves Queenie from the Hotel Cortez and Madison from her personal hell to prove his abilities.
With Cordelia's powers waning, she starts to assemble an army against Michael after she has a vision of the devastation he will bring. Madison and Behold go to the Murder House to investigate Michael's origins.
Madison and Behold encounter the ghosts of the Murder House and learn about the true rot in Michael's soul from his grandmother Constance and Vivien and Ben Harmon. Vivien reveals the identity of Michael's real father.
As Zoe suspects that Mallory is the next Supreme, Cordelia tries to strike a deal with Papa Legba. The coven deals Michael a powerful hit.
A devastated Michael loses his faith when he fails to bring Mead back. His search for guidance leads him to a satanic cult that helps him find his way.
As Michael kills most of the witches, Cordelia contemplates her own death to help Mallory rise as the new Supreme in order to travel through time and stop Michael. Michael starts planning the end of times.
The coven faces off against Michael in a desperate attempt to allow Mallory to travel through time and save the world.