Bulli and Lina have become thick friends. And since friends do everything together, Lina needs to learn to ride quickly! As a former competition pony, Bulli is of course the perfect teacher. Or is he? Lina turns out to be a true natural talent, and Bulli must learn that he might not be infallible after all - which is not easy for the smartest pony in the world. Then, just before the big tournament, Grandma's money box goes missing, and Lina is suspiciously accused of stealing it. Bulli can't possibly believe that! Together with the other ponies, he sets off to uncover the real villain. It's top-notch situational comedy - narrated by comedian Oliver Kalkofe as Bulli and Marie Bierstedt as Lina.