In a city where shadows have begun to act independently, players step into the shoes of Lucien, a reluctant shadow investigator gifted with the uncanny ability to interact with other people's shadows. The shadows have developed personalities, secrets, and—most disturbingly—an agenda. Players must piece together the truth behind a conspiracy that threatens to erase both literal and metaphorical shadows from existence. As players navigate through various personal stories and confront moral dilemmas, they must decide whom to trust, often finding that the biggest threat may not be the light, but the shadows lurking in plain sight.