Part III — The Map of Forgetting Ebrahim isolates the hum; when slowed, it becomes a map encoding routes through neighborhoods erased after an ecological shift called the Quieting. Jun recognizes landmarks in the clips that no longer exist. Mara cross-references the metadata with old municipal logs and uncovers a secret program that encouraged citizens to transmit small, intimate artifacts into a communal backup—an act of cultural triage during the Quieting.