One Piece is getting yet another anime special, and it is scheduled to air this December 2015! The special is titled “Adventure of Nevlandia,” and it will feature the Straw Hat Pirates going head-to-head with the returning Foxy Pirates in a mysterious foggy island.
Making their return from the Davy Back Fight arc are the Foxy Pirates, who are now sporting three new members of their crew. They will be facing off with the Straw Hats on a mysterious island of fog which has the ability to prevent gomu-gomu fruit users from using their powers. Yikes!
Scheduled to be broadcasted on 19 December, this One Piece special will feature an original story directed by the anime’s original director, Kounosuke Uda. He will be teaming up with writer, Atsuhiro Tomioka, who is definitely no stranger to One Piece. More announcements, such as the guest cast members, will be revealed in the days to come.
source: Comic Natalie