Princess Fuuka of the Silver Castle is a "failure of a witch" who can't seem to do anything right. One day, Fuuka accidentally breaks the seal on the "Black Bracelet" hidden in the castle's basement. The bracelet holds a secret—it once contained the "Dark Witch" who tried to destroy the world. Fuuka, along with her friends Chitose and Karin, are flung into another world by the Dark Witch's power. There, a mysterious amusement park full of terrifying traps appears before them...!? Will Fuuka and her friends be able to repel the darkness and save the magical kingdom from peril—?