One day, Ruri, an ordinary daycare teacher, is suddenly enveloped by a bright light at home. At a loss for what to do, she is somehow befriended by a shy young girl named Leena, and is assigned to be her teacher. She starts working to make a living until she can return to his original world, but this time, her out-of-the-ordinary magic skills are awakened..! "Could it be that I am the "third saint" that I heard about?"