Dorothy, now an elderly woman haunted by her past, tries to warn her granddaughter Emily before dark forces pull her into Oz, a once familiar land now twisted by horrors.
As she lies dying in prison, notorious serial killer Dorothea Puente spills her grotesque secrets, unraveling the story of how a life shaped by abuse, betrayal, and manipulation turned her boarding house into a graveyard.
Luna, a cruise ship chambermaid, has to quit her job to attend to her sick brother. While doing so, she discovers that her mother has gone missing and her brother's condition is getting progressively worse. The siblings desperately sneak into an empty condo unit but soon discover that Penthouse 77 is not what it seems.