Pirates from Upside Down

After the intense battle in Dresserosa the Straw Hats all decided to relax on an island. While there they are attacked by a mysterious monster, unlike anything they ever saw, the Demogorgon. While fighting the monster Luffy, Usopp, Sanji and Robin are all sucked towards a portal to a mysterious portal and are teleported to a little town where they meet some kids and a weird girl.