: Through found documents and "lost films," Rosemary discovers a web of lies involving kidnapping, arson, and a cover-up linked to Professor Albert Elias Wyman and the Felton family. The goal remains finding the truth behind the disappearance of Celeste , Felton's daughter, 21 years prior.
: She is relentlessly stalked by Dr. Felton , who suffers from a mysterious, bone-thickening illness caused by "lepodopterans" (moths) nesting in his body. Rosemary also begins to encounter the terrifying Red Nun , a figure deeply tied to the villa's dark past.
: Rosemary must navigate the ground floor and basement to find key items, such as batteries for the stairs controller and a way to remove a clogged object from a drain pipe—which turns out to be a clock key.
Following her initial infiltration into Dr. Richard Felton’s villa, Rosemary Reed finds herself trapped and hunted. As she moves deeper into the house, the investigation shifts from a formal inquiry into a desperate fight for survival.