One Piece: Glorious Island
Genres: Action, Adventure, Fantasy
Type: Special, Episodes: 2
Aired: Dec 23, 2012 to Dec 30, 2012
Studio: Toei Animation
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
An exclusive anime prologue to One Piece Film Z with an original story penned by manga creator Eiichiro Oda. 

(Source: ANN)