Tarzan helps the people on an sinking schooner escape. He discovers the passengers are Jane's friends Eleanor, Hazel, and Greenly, as well as Greenly's fiancé Henry. Eleanor and Hazel do not think Henry is "well-rounded" enough, hoping the jungle and Tarzan can toughen him up. Eventually Henry's toughness is put to the test when an earthquake, followed by a tidal wave, hits the jungle.

A bush pilot named Bobby Canler, who is an old friend of Jane, comes to visit her, but Tarzan senses something bad about him. He is later convinced he's just jealous so he backs off. Unfortunately, Tarzan was right.