Noby wants to raise a pet from an egg like Sue's pet bird, Sunny, so Doraemon reluctantly gives him an egg out of which hatches a baby hurricane, which Noby names Spinny. But Spinny is a force of nature, not a pet, and when he destroys Noby's room out of separation anxiety, Noby's parents demand that Noby get rid of him, just in time for a real hurricane to strike.