Chosen answer:When Brent and Nova secretly return to Ape City, they are discovered by a gorilla soldier who shoots Brent. He then takes them to Zira and Cornelius' house.
Chosen answer:It's never explained. The ship had gone through a time warp and that may have rendered it inoperable once it arrived at the new time destination.
Chosen answer: When Brent and Nova secretly return to Ape City, they are discovered by a gorilla soldier who shoots Brent. He then takes them to Zira and Cornelius' house.
raywest ★