即将废社的时濑高中筝曲社。来到只身一人的社长面前的是不良少年和他的朋友们，以及古筝的天才少女。各自各自的古筝之乐所编奏的青春学园物语——
Based on the smash video game series by Double Fine Productions (Psychonauts, Broken Age) and the world originally created by Tasha Sounart, Costume Quest is a funny and mysterious animated series aimed at six to 11-year-olds. The show stars four kids facing off against the dark forces lurking in the shadows of their sleepy town of Auburn Pines. To overcome obstacles and achieve their goals, they must learn to unlock and master the magical powers of super-normal costumes-with each costume comes a new set of transformations and powers.
多萝西自称天才欺诈师，邀请洛朗·蒂埃里进入游戏世界。在与上海龙虎帮的博弈中失败，她失去了性命……应该的。在海边的小村庄，离亚洲城市台北不远的地方，有她的身影。被台北的地下社会追赶，以京都为目标，前方等待着的是……!?
