A psychopath wakes up in an asylum and must become a monster hunter during the Apocalypse, but he doesn't know if he's in the Apocalypse, killing people and thinks it's the Apocalypse, or it's all in his head the whole time.
Ichabod wakes up to find himself locked in a discussion with his psychologist while simultaneously in the basement of the asylum with a group of survivors...including an old friend.