Mikanne has had a rough past with her step-father, her mother's death, and her sister moving out, leaving her to live the rest of her adolescence alone with the man she hates. Suffering now from PTSD while not being able to recall a single joyful memory, or the person who helped her have them, she dances her time away. She runMikanne soon runs into a few people who, supposedly, know her, though her memory of them is non-existent. As they try to uncover why she keeps forgetting them, she finds the dark secrets about the world, and these newfound friends.