You are Captain Lumen, the last warm photon, on a journey to bring back the night sky. Five worlds, each built on one of the five principles of responsible outdoor lighting: Useful (shield needless uplights), Targeted (aim light onto facades, not the sky), Low Level (dim each light to its proper level), Controlled (switch glare to curfew, and the dark reveals the way), and Warm-Coloured (warm the coastal lamps and guide the hatchlings to the sea). The twist every lighting designer will feel: more light is not better. Over-light a scene and the glare blinds you. Quality over quantity is literally how you win.