Luna, now the archivist, stands at a gas station payphone in the desert, holding two keys—one for Sarah, one for a younger version of herself. The ringing stops when she answers, and a recorded voice tells her the chain cannot be broken, only transferred. She learns that to save Sarah, she must give her key to the girl who shares her name, erasing her own arrival. As she walks back toward the motel, the sand shifts, and a new photograph appears at her feet—this time, of herself, smiling, dated the day before she first arrived. The knock is no longer coming from the room. It's coming from inside her chest.