Set in a city where shadows seem to have a life of their own, players take on the role of Cassie, a private investigator suffering from amnesia. As she delves into the psyche of her shadowy surroundings, she must piece together her fragmented memories while dealing with enigmatic characters and their darker sides. Each decision triggers different shadow manifestations, leading to multiple endings based on moral choices. The goal is to uncover the truth behind her past, her connection to the oddly sentient shadows, and solve a series of interconnected mysteries that reveal deeper questions about identity, fear, and acceptance.