Yukon Ed has asked saloon owner Ruby McGraw to marry him several times, and has been turned down each time. However, she falls for Jack Sturgess, a no-account who has seduced and abandoned a poor young girl and is escaping from his father's anger. She takes up with Jack to Ed's dismay, and soon the thing that Ed feared would happen does happen.

A female ape takes to mothering the orphaned boy (Tarzan) and raises him over the course of many years until a rescue mission is finally launched and the search party combs the jungle for the long-time missing Lord Greystoke. But then, one of the search members, Jane Porter, gets separated from the group and comes face to face with fearsome wild animals. Tarzan saves her from harm just in the knick of time and love begins to blossom.