The ancient empire Rabida is a huge robot island floating in the air, which is said to be uninhabited and contains great wealth. Therefore, both the military and pirates are looking for this legendary flying island. Miner Parker ran into Hilda, the heir to Ladabi that day, and the two hit it off. Because Hilda is looking for the flying stone, an important object of the La Prida Empire, both the military and the pirates are hunting for Hilda. Parker fled with Hilda, but eventually did not escape from the military. Hilda was taken by the army. In order to save his friends, Parker can only choose to cooperate with pirates. Parker and the pirates succeeded in rescuing Hilda, and at the same time, they also discovered the evil plan of the military. In order to stop the implementation of the military's evil plan, they went on a journey to find Rabida with the pirates.