Set in a futuristic city where technology has reshaped sound and echoes, players take on the role of a skilled sound engineer caught in a web of deceit when their voice is mysteriously echoed back to them during a high-profile event. As the city is plunged into chaos after the echo reveals dark secrets, players must traverse hidden alleys, engage with quirky characters, and solve sound-related puzzles to uncover the truth and prevent an impending disaster. Each choice affects the story's outcome, leading to multiple endings based on the player's decisions and the mysteries they unravel.