When students in their high school begin inexplicably exploding (literally), seniors Mara and Dylan struggle to survive in a world where each moment may be their last.
Spontaneous is a 2020 American coming-of-age black comedy horror film, written, produced and directed by Brian Duffield, in his directorial debut. It stars Katherine Langford, Charlie Plummer, Hayley Law, Piper Perabo, Rob Huebel and Yvonne Orji and is based on the 2016 novel of the same name by Aaron Starmer.