The doctor came and he shook his head. "Your granny has the moozies," the doctor said, "And the only cure in the world," said he, "Is the fruit that grows on the flumflum tree..." And so Jack sets sail with a crew of two to bring home one of the magical medicinal fruits from the faraway island where they grow. For the journey, Granny gives him a patchwork sack filled with an eccentric array of items including chewing gum, wooden spoons, tent pegs and balloons. What use will they be on the high seas? Jack can't imagine, but he soon finds out his mission cannot be completed without them.