Two years after 17 people were killed and 17 others injured by a teenage gunman at Marjory Stoneman Douglas High School in Parkland, Florida, a new documentary follows survivors and families. Those behind the documentary say:

“After Parkland” is a rare and intimate portrait of the private journeys of those who rose to challenge the nation to end gun violence. The filmmakers followed students and families directly affected by the shooting, from its immediate aftermath to the beginning of the next school year.

The documentary will stream exclusively on Hulu starting Feb 19. Nightline explored the story behind the documentary. Watch their report above.