"Simon O'Keeffe's biggest claim to fame should be the time his dad accidentally gave a squirrel a holy sacrament. Or maybe the alpaca disaster that went viral on YouTube. But the story the whole world wants to tell about Simon is the one he'd do anything to forget: the story in which he's the only kid in his class who survived a school shooting. Two years after the infamous event, twelve-year-old Simon and his family move to the National Quiet Zone...

Minutes after the principal of Opportunity High School in Alabama finishes her speech welcoming the student body to a new semester, they discover that the auditorium doors will not open and someone starts shooting as four teens, each with a personal reason to fear the shooter, tell the tale from separate perspectives