Mr. Wirsing's Wonder Box is the most beautiful toy store in the world! In addition to the usual stuffed animals, trains, and dolls, there is also magical toys here, such as flying paper butterflies or edible soap bubbles. Oda can hardly believe her luck when Mr. Wirsing offers her the chance to help him out in the store a little. As a reward, she gets to choose a toy every month - no matter which one! And when Oda takes home the talking lucky cat Mao, a enchanted adventure begins...