A Timeline of All the Most Important Dates in the "American Horror Story" Universe

2020 — "Apocalypse"

• In the original "Apocalypse" timeline, nuclear missiles destroy most of the world thanks to Michael Langdon (Cody Fern), also known as the Antichrist, leaving survivors including Mallory (Billie Lourd) to fight for their lives.

2021 — "Double Feature"

• A group of students heads out to the desert where they are all impregnated with alien babies. They are all killed by aliens.
• Mamie Eisenhower (Sarah Paulson), who is now immortal and living in Area 51, tries and fails to stop the aliens' plan to take over humanity.

2021 — "Apocalypse"

• Michael Langdon visits Mallory's outpost to decide who will live, and a massacre ensues. Some of the witches from "Coven" resurrect Mallory, who becomes the new Supreme and is able to travel back in time to kill Michael and prevent the nuclear apocalypse.
• In the alternate apocalypse-free timeline, Timothy (Kyle Allen) and Emily (Ash Santos) have their first date.

2021 — "Double Feature"

• Harry (Finn Wittrock) moves with his family to a house in Provincetown, MA.
• Faced with severe writers' block, Harry takes a black pill which helps him write but has side effects that turn those who take it into vampiric creatures called the Pale.

2022 — "Hotel"

• On Devil's Night (Oct. 30), James March has dinner with the spirits of famous serial killers.
• Billie Dean Howard (Sarah Paulson), "Murder House") communes with the ghost of John Lowe, and he scares her away.

2024 — "Apocalypse"

• Emily and Timothy's child kills his babysitter. A group of Satanists finds him and prepares to help him become the new Antichrist.