On a bright and sunny day, Mickey and his beloved dog Pluto row a small boat along the river in the Amazon jungle. His boat is filled with all sorts of novel gadgets from "civilized society." Perhaps Mickey hopes to trade these cheap yet appealing items for something valuable from the indigenous people of the primitive jungle, but he never expects danger to be lurking nearby. As soon as he docks, cannibals hiding in the bushes swarm in—some busy tying up Mickey and Pluto, while others scramble to seize the goods. They let out terrifying cries as they carry their spoils back to the tribe. The plump chief is overjoyed by his people’s haul and orders his men to boil water, ready to taste Mickey. 　　 Meanwhile, the natives fiddle with the goods Mickey brought. These never-before-seen items open their eyes to a whole new world, and an accidentally played musical instrument becomes Mickey’s key to survival...