Luna is trapped in the chamber beneath the water tower, the third lamp extinguished, her grandmother's final instruction echoing: 'The door must close from inside.' Beyond the locked grate, child laughter fades into silence. Luna finds a key among the photographs and unlocks the grate, entering a tunnel lined with iron doors. Each door bears a name — her grandmother, her mother, her own. Behind the door marked with her name, she finds a room where the walls are mirrors and her reflection ages backwards. A shadow approaches the door from the tunnel, and Luna must decide whether to step through the mirror or face what's coming. This episode deepens the mystery of the lamps, the family curse, and the truth about the door that opens every generation.