Nakamura, a member of a documentary production crew, gets married and resigns despite his colleagues' objections, saying that he and his wife plan to work at a clinic on a remote island at her request. One month later, all contact with him suddenly stops. Sensing that something is wrong, the crew follows an address Nakamura previously shared and travels to the island. What awaits them is a brutal welcome from its residents—and the disturbing truth about the nurse serving their sexual demands.