Ape leader Caesar, and his advisiors, orangutang Virgil and human MacDonald, search the radioactive Forbidden City for electronic files about Caesar's parents and what the future holds for Earth.
The trio find the info, but the mutated human inhabitants of the ruined city find them.
Though the explorers escape, the mutants, now aware of their existence, follow...
It's unknown how many differences between this adaptation and the movie (such as General Aldo attacking Virgil instead of Ceasar's son Cornelius) were the result of working from an early draft of the script, or an attempt to keep the story "kid-friendly".