Mirat, a trumpet lion is different to all the other lions in his clan. He isn't able to trumpet roar like all the other ones, but instead to his mom's dismay, chirrups like a bird. In another part of the world far away, Tschibidad, a Mozart bird, loves to play practical jokes on others, because when he opens his mouth he doesn't chirrup, but trumpet roar instead. Imagine how surprised Tschibidad is, when one day he learns about Mirat, the trumpet lion.