A million years prior to the dawn of Homo sapiens, two immortal, shapeshifting aliens roam the Earth with little memory of their origin or their purpose. In the year 2019, an artifact is discovered off the coast of Samoa, buried deep beneath the ocean floor. The mysterious find attracts the alien beings—the "changeling" and the "chameleon"—to Samoa, where one ponders the meaning of the object and the other speculates on its relationship to each of them. Both immortals seek each other for different reasons: one harbours good intentions toward humanity, while the other is extremely hostile.

