The novel tells the story of John Clayton, born in the western coastal jungles of equatorial Africa to a marooned couple from England, John and Alice (Rutherford) Clayton, Lord and Lady Greystoke. Adopted as an infant by the she-ape Kala after his parents died (his father is killed by the savage king ape Kerchak), Clayton is named "Tarzan" ("White Skin" in the ape language) and raised in ignorance of his human heritage.Feeling alienated from his peers due to their physical differences, he discovers his true parents' cabin, where he first learns of others like himself in their books, with which he eventually teaches himself to read.On his return from one visit to the cabin, he is attacked by a huge gorilla which he manages to kill with his father's knife, although he is terribly wounded in the struggle. As he grows up, Tarzan becomes a skilled hunter, gradually arousing the jealousy of Kerchak, the ape leader.Later, an African tribe settles in the area, and Kala is killed by one of its hunters. Avenging himself on the killer, Tarzan begins an antagonistic relationship with the tribe, raiding its village for weapons and practicing cruel pranks on them. They, in turn, regard him as an evil spirit and attempt to placate him.The twelve short stories Burroughs wrote later and collected as Jungle Tales of Tarzan occur in the period immediately following the arrival of the natives, the killing of Kala, and Tarzan's vengeance.Finally Tarzan has amassed so much credit among the apes of the tribe that the envious Kerchak at last attacks him. In the ensuing battle Tarzan kills Kerchak and takes his place as "king" of the apes.