Saponcio and Saponcia are the monarchs of the lagoon. Their daughter, the princess, wants a motorbike: but who has ever seen a princess on a motorbike? Her parents will not allow it. So they decide it's about time she got married. But who will be the chosen one? Can a toad-princess marry a human prince? And if the toad-princess kisses a human prince, what will he turn into?