Kelpy the otter builds himself a boat. A boat that he loves, even though it is most definitely a homemade boat. Despite ridicule by other otters, pirates and sharks, Kelpy sails on. Then he comes across Blistering Blustering Butterbeard: a butterfly pirate in his own tiny boat. At first Kelpy is incredulous - he laughs. But Butterbeard's hurt feelings and tears turn Kelpy's distain to empathy. In a surprising turn, Kelpy scuttles his beloved boat for the butterfly's benefit, indulging Butterbeard and starting an uproarious game that they play again and again and again.