In this interactive text-based adventure, players embody a seasoned sound engineer who discovers they can hear echoes of events from the past. As they navigate through a series of urban settings—abandoned buildings, bustling subway stations, and quiet forests—they must piece together clues hidden in these echoes to solve the mystery of a missing person tied to an infamous local legend. Each echo presents a choice that can alter the story's outcome, leading to multiple endings based on players' decisions. As voices of the past intertwine with their present, the engineer must confront their own demons and uncover the truth behind the haunting melodies.