The last of the original series takes place a decade or so after its predecessor. There's an Ape City, run by Caesar, the benevolent ruler played by Roddy McDowall, and its human denizens are servants to their simian cousins. Caesar's aide tells him of a place in the Forbidden City, now decimated by nuclear strikes, where video footage of Caesar's parents exists. Caesar has no memories of his parents, who were killed when he was a baby, so he, his aide, and the wise Virgil (Paul Williams) travel to the city and encounter a band of now-mutated humans who live in some squalor and are led by Kolp (Severn Darden). Kolp, learning of the apes' arrival, decides to launch a preemptive strike on Ape City to exterminate them all. Meanwhile, there's dissension among the apes - particularly, the combative General Aldo (Claude Akins), who wants to take over because he likes making war and being the Man. Anyway, the movie isn't as good as those earlier in the series, but it's passable. McDowall is very good, and in fact the ape costumes are still top notch. This is a fitting coda to the series.