Fuuka, a young witch, is striving to follow in the footsteps of her mother, the queen of Silver Castle, by improving her magical abilities. Her lively spirit and unyielding loyalty to her companions have made her quite popular. Despite her propensity for mischief, her closest friend is Karin, a princess of Green Castle, and her childhood companion, Prince Chitose of Blue Castle, frequently joins them on their adventures. During one of their expeditions into the Wood of Wolf, they stumble upon a peculiar hole instead of the tunnel they had been seeking. This is an exciting story of friendship and exploration.