"Mikan's daring rescue of Natsume has earned her an upgrade to One-star rank, and just in time for the School Festival to start. The festival is even more spectacular than Mikan had ever dreamed, and she and the rest of the Special Ability class are all set to knock visitor's socks off with their great new attraction. But what will happen when Mikan and Natsume get locked into the haunted house together?! And what is going on with the mysterious set of Principals and Hotaru's older brother?" -- from publisher's web site.