One Piece: Strong World

Once hearing the news that several islands in East Blue are being destroyed, Monkey D. Luffy and his friends immediately go to investigate. On their way, however, an outlandish pirate ship appears out of the sky, which is under the control of the infamous pirate Shiki, namely, "the Golden Lion", the man who ate the Float-Float Fruit and was the first jailbreaker from Impel Down. Shiki has a desire to defeat the World Government while lacking a useful assistant, therefore, Shiki kidnaps Nami to be his own navigator and sends the rest of the Straw Hat Pirates to his floating islands as hostages, which made her in a dilemma. Separated in a land under Shiki's absolute control, Luffy and his crew must survive the mystifying terrain in order to bring back their navigator as well as friend.