Never did the orphan boy Bosse believe that his father was a good-for-nothing, as his foster mother claimed. And indeed: When he mysteriously arrives in the "Land of the Far Away," he meets his father, who is the king there. Bosse becomes Prince Mio, and in the boy Jum-Jum, he finds a true friend. However, the land is threatened by the evil knight Kato, who has a heart of stone. It is up to the two boys to take on the terrible battle against him and save the kingdom.