Karen, a young psychiatric nurse, boards the last subway train of the night only to have it stop in the middle of the tunnel. Suddenly, her nightmare begins: a mysterious cult has decided that it's the end of the world and the only way to save the souls of the living is to kill them in cold blood. As those around her are brutally murdered, Karen and a handful of survivors must face the homicidal cult, supernatural forces, and their own fears of Armageddon in order to survive.

When true-crime junkie Eva Vaugh is shoved into the dating app world by her besties on her 30th birthday, she suddenly finds herself at the center of a real-life murder case. As new details about the murders are revealed on her favorite podcast, she realizes that one of the three men she’s dating could be the infamous "Swipe Right Killer" terrorizing the city.