In the unique cat colony of Relictown, where society is built around musical choruses, a declawed outcast named Brownie dreams of finding his voice. But when it's revealed their entire world is a human experiment about to be shut down and demolished, Brownie is swept up in a desperate exodus led by the colony's enigmatic leader. He must navigate treacherous territories, unite fractured groups, and confront his own past to help save a civilization that never truly accepted him, all before their world is wiped from the map.