One Piece: Strong World (2009)

The Mugiwara pirates are tricked by the powerful Shiki (The Gold Lion) and dropped on an archipelago of floating islands where the fauna has mutated to incredible size and strength. Captain Luffy and his crew must race against time to uncover and foil Shiki's terrible scheme. A simple story, but well-paced and with ample interactions and confrontations between the hero's and villains.