Joe Grant is the renegade husband of Lengua, a beautiful South African native girl. John Lewis is a South American trader, living with his daughter Grace. Ned Singleton helps Lewis in his work. Grant steals from Lewis’ trading post and orders the abused Lengua to aid him in secreting the loot, and she refuses. She tells Lewis of Grant’s misdeeds. Grant overhears her confession and vows revenge. Lewis goes into the jungle to take medicine to some stricken natives. He is followed by Grant, who shoots him. Lewis, badly wounded, discovers a jaguar near him, and in desperation ties his necktie around the wild beast’s neck. The jaguar escapes and is found by Grace Lewis. Grant falls into a jaguar trap which already holds an imprisoned animal and is torn to pieces. Lewis is rescued and recovers his health.