How do you fight an enemy you cannot see? High school athlete Hannah Lucas faced the greatest challenge of her life and found strength she never knew she had. After struggles with depression and suicidal ideation, she developed the app notOK which provides emergency mental health care at the press of a button. With thousands of users, it has changed lives across the country. The three-part docuseries Out of the Dark, showcases the personal journeys of some of the most influential mental health activists. Each short film takes an in-depth look at the struggles these young leaders overcame, the impact of their work, and their continuing journeys.