2026, ten years since the Simian Flu wiped out most of humanity. Deep in the woods outside of San Francisco, Caesar and his primate companions have established a village built on the principles of peace and community. One day Caesar's son Blue Eyes is walking through the forest with his friend Ash when they cross paths with a human named Carver, who impulsively shoots Ash at the first sign of aggression. Carver is part of a human expedition led by Malcolm. An enraged Caesar drives the humans away after realizing they are no longer a threat, and decides to dispatch a small crew to follow them, rather than to launch an attack as suggested by his aggressive advisor Koba.