On June 12, 2016, a gunman walked into a crowded nightclub in Orlando, Florida and shot 102 people, murdering 49 of them. At 2:00 AM, the Pulse nightclub was winding down it's weekly Latino night. The building was dark, crowded, and loud. Patrons were making plans to leave when they were ambushed by a gunman, who began firing in every direction. Customers tried to escape, but the killer followed them. For the next three hours, the gunman terrorized victims while playing a "cat and mouse" game with the police. Join acclaimed filmmaker Charlie Minn as he tries to answer several questions that remain unanswered about this tragedy, including why the perpetrator chose Pulse nightclub and why it took over three hours for police to stop the shooter. Through his interviews with the survivors, police, family members, and city officials, Minn pieces together how one of the largest mass shootings in American history took place.