Eliza, a wolf tamer searching for her missing cousin Leroux, is captured by the Akurem knights in the caverns of Yamana. She is subjected to a harrowing ritual that transforms her into a "maternity princess," a living nursery designed to spawn monsters. Despite the ritual's attempt to erase her identity through overwhelming pleasure, Eliza maintains her consciousness and is eventually rescued by her wolf companions, though her journey to find Leroux has only just begun.