Refusing the grandmother's bargain, Luna is led back to the hidden chapel where her name is carved into the altar. But the grandmother reveals a final truth: the cycle isn't about trading children—it's about trading souls. Luna discovers a door in the floor beneath the altar, leading to a vault of family secrets. Inside, she finds a letter from her grandmother, written before she was born, explaining the true nature of the pact. The episode ends with Luna holding a key that unlocks a chain binding her mother, her sister, and herself—and the voice of her mother, young and desperate, calling from deeper in the vault.