Himetori and Chin Tarou arrive on a deserted island, only to unexpectedly encounter the local indigenous people. As the two groups engage in cultural exchange between civilization and primitivism, they experience repeated clashes and fusion. Himetori becomes captivated by the indigenous people's unique sexual practices, discovering new forms of pleasure, while Chin Tarou gradually betrays them, exploiting the natives solely to satisfy his own desires. This leads to dramatic changes on the island. The story culminates in an unexpected twist and a large-scale orgy scene, driving the narrative to its climax.