Aging director Cap Vogel previews his first film in a decade only to find that its meaning has fallen on deaf ears, and sets out against time—and his own daughter—to cancel the premiere of his magnum opus.
Stuck in their classroom during a school shooting, a group of high school students and a substitute teacher fight to keep their composure. As chaos erupts around them and they race against the clock, they're forced to make life or death decisions.