Don't Go In That Door!

After losing their parents, a brother and sister move into the gloomy mansion of their Aunt Grace, who lays down house rules and forbids them from ever opening one chained, padlocked door. The warning only makes the door irresistible. The siblings cheerfully admit they will go in anyway, critique the locks for drawing attention, and pitch theories about haunted objects, a monstrous son and an ancient burial ground, treating every ominous hint as backstory and a character arc to decode. Each scare, from skeleton keys hidden in a fake rock to a rattling door and a sudden doorbell, only thrills them more, even after a note slipped under the door begs them to leave it alone. Then their phones regain signal, a friend invites them to a party, and the pair wander off with the door still shut.