Tennomifune Academy's Class 1-7 is on a trip to summer camp! That's nothing out of the ordinary for your typical teenagers, but for the misfortune-plagued students of the "Happiness Class" it's a surefire recipe for disaster! Can Hibari, Hanako, Botan, Hibiki, and Ren overcome their collective lack of luck, or will their summer memories be filled with endless mishaps?