Recently, scientists have been discovering that exposure to artificial light at night can throw our internal body clock out of sync with the planet and may even be leading to serious illnesses. Lights Out!joins leading scientists in the lab and in the field to discover how much harm light at night may be causing, and to learn about the groundbreaking steps being taken to protect ourselves. The documentary gives us the heads up on the danger hot spots we can find everywhere — from the illumination in the hospital ICU to the tiny screens of our mobile devices. What can we do about an environmental hazard that we just can’t seem to live without? Lights Out! ventures into the darker side of light to search for answers.