Sealed beneath a mountain for centuries, Sun Wukong, the once-unstoppable Monkey King, is accidentally released by Jiang Liuer, a brave village boy, after a mysterious force snatches local children. Weakened and wary, Wukong begrudgingly agrees to help, joined by the bumbling Pigsy and a kindly monk. Their trek across perilous lands forces the fallen legend to confront fear, pride and responsibility, culminating in a showdown with the demon lord Hun Dun, where protecting others becomes his path back to true strength.