Before the invention of the light bulb light and dark followed a predictable 24-hour cycle. Across an ever-increasing amount of Earth’s surface, that’s no longer the case. Because light has positive connotations with security, wealth and modernity, humans tend to illuminate their environment intensively. Over the last decades, light pollution has intensified. The documentary investigates the impact of light pollution on humans and environment and shows the new research results on future of lightning.