The goal: 1 trillion yen!!!! In order to cover the \"10-billion yen\" debt that Sora Kamiiri\'s father owed, Sora\'s birthplace, Kamiiri Island, was taken away from her and she was forced to find another place to live. Sora worked part-time to try to buy back Kamiiri Island, which is filled with precious family memories, until she meets a mysterious boy named Fugetsu Akiyama. Along with Sora\'s childhood friend Soukaiji, they come up with a plan to steal a large sum of money!