"Onwards to the Sky Island"

One Piece: Episode of Skypiea

The Straw Hats embark on a dangerous trip to the sky where their destination comes straight out of a fairytale. The island of Skypiea and its grand city of gold await among the clouds, but a clash of winged clans and a man who calls himself God won’t make things easy! Only Luffy can resist this God’s mighty power and light the mysteries of the past.