The story begins when Kururin’s brothers and sisters go missing, and it is up to him to find them. Kururin is initially unsure that he is up to the task because he has never left his home world before. Being the adventurous and helpful fellow he is, Kururin agrees to rescue his lost family. Teacher Hare trains Kururin in the art of controlling the Helirin, a stick-shaped helicopter that has a slow-spinning propeller. Piloting the Helirin through the different worlds will be a difficult task, but using Teacher Hare's valuable lessons, Kururin bravely sets out on his adventure to rescue his lost family.