Return to the Planet of the Apes Episode 11 Mission of Mercy Episode Title:Mission of Mercy.Episode Description:As a result of the dog fight with the flying monster, most of the plane's fuel is gone, leaving only a two- to three-hour supply. They must replenish the fuel somehow, since it is their only way to keep watch over the mountain pass at the far end of New Valley. Using an abandoned gorilla truck and a map Brent found inside, Bill and Jeff leave to find more fuel, planning to travel only at night and hide inside an old farm house...