In a world where artificial light has replaced sunlight, leading to severe health consequences, players assume the role of Aiden, a brilliant but jaded light engineer. As Aiden navigates the dark corridors of a corporate research facility, they uncover a conspiracy that reveals the detrimental effects of LED lighting on human health and visual performance. Players must solve puzzles to manipulate the unique properties of light, unlock secrets hidden in the shadows, and ultimately decide the fate of a society that has forgotten the sun. Choices made regarding light exposure will either lead Aiden to help society recover its natural rhythm or plunge it deeper into chaos.