In order to power the city after humanity extinction, scary monsters have to scare human children so that they scream. However, the human children are toxic to the monsters, and after Mike, Sulley, and Cyn reunite with a grown-up Boo, who now brings them alarming news of a threatening monster hunting season initiated by malicious humans targeting monsters. Mike, Sulley, Cyn, and the rest of monsters unite with a human Boo as they embark on a epic adventure to battling the human hunters and ensure the survival of their way of life.
