In a hidden corner of the world, Namanama's followers uncover an ancient ritual that promises a unique form of union. Henry Tsukamoto, a skeptic, volunteers to test the ritual's authenticity, finding himself inexplicably bound to Izumi Terasaki in a most intimate way. As they grapple with their new reality, they discover that their bodies have a life of their own, responding to each other with a hunger that defies explanation. They navigate the complexities of their unusual union, exploring the boundaries of pleasure and the limits of human connection.