Deep in the north of Japan at a mountain temple, a festival called the Somin-sai and nicknamed the Naked Festival, has been held for around one thousand years. British actor, Dean Newcombe, travels to Oshu, in southern Iwate, to join in this enigmatic festival. First he takes in some of Oshu's other ancient winter rites. And then he visits a Zen training temple to practice asceticism to focus his mind for the harsh festival. The finale of his trip-the Somin-sai-was an experience beyond Dean's wildest dreams.