The plot follows the novel more closely than does any other Tarzan movie. John and Alice Clayton take ship for Africa. Mutineers maroon them. After his parents die the newborn Tarzan is taken by a great Ape, Kala. Later the boy finds his father's knife and uses it to become King of Apes. Binns, the sailor who saved the Claytons and who has been held by Arab slavers for ten years, finds the young Tarzan and then heads for England to notify his kin. A scientist arrives to check out Binns' story. Tarzan, now a man, kills the native who killed Kala; when their chief is killed the black villagers appease Tarzan with gifts and prayers. The scientist's daughter Jane is carried off by a native, rescued by Tarzan (who has burnt the native village), aggressively loved by him ("Tarzan is a man, and men do not force the love of women"), and at last accepts him with open arms.

After his wife discovers a telltale diamond bracelet, impresario Martin Cortland tries to show he's not chasing after showgirl Sheila Winthrop. Choreographer Robert Curtis gets caught in the middle of the boss's scheme. Army conscription offers Robert the perfect escape from his troubles- or does it?

In the coast range mountains on the western edge of the Salinas Valley is a ranch where Tom, a lad of about ten, longs for a pony. He lives with his mom, who was born there, her dad, a talkative pioneer who misses the old West, Tom's dad Fred Tiflin, who comes from the city and after years on the ranch doesn't feel at home there, and Billy, their trusted hand, a real cowboy. While Fred has to sort out whether he wants to stay a rancher and come to terms with his son being closer to Billy than to himself, Tom gets a pony and learns directly about responsibility and loss. What lessons can each learn, and are tragedy and hard choices all that life offers? Are laughter and joy anywhere?