Set up as though it were a true tale, this far-out Italian potboiler by Mario Garriazo (aka: "Roy Garrett") begins with the reminiscences of a London housewife and continues as a long series of flashbacks. Catherine (Elvire Audray) lives with her parents on a plantation on the Amazon River. On her 18th birthday, the family takes a trip upstream and are attacked by Native Americans. Her parents are killed by poisonous darts and Catherine is captured and then raised by an Amazonian jungle tribe. After some adjustment to this new life she ascertains that her aunt and uncle were the real killers of her parents. This discovery sets her off on a mission of revenge across the Atlantic and into another series of adventures.