In a near-future world, a new technological therapy is quickly eradicating cancer: The body’s cells are entirely replaced with nanites—robot or android cells that not only cure those afflicted but leave them virtually immortal. At the same time, literary researcher Yonghun teaches an AI how to understand poetry and creates a living, thinking machine he names Panit, meaning "Beloved," in honor of his husband. When Dr. Beeko, who holds the patent to the nano-therapy technology, learns of Panit, he transfers its consciousness into an android body, giving it freedom and life. As Yonghun, Panit, and other nano humans thrive—and begin to replicate—their development will lead them to a crossroads and a choice with existential consequences.