One Piece Film: Z is a 2012 Japanese anime fantasy action adventure film directed by Tatsuya Nagamine. It is the twelfth feature film based on the shōnen manga series One Piece by Eiichiro Oda. The film stars the regular television cast of Mayumi Tanaka, Kazuya Nakai, Akemi Okamura, Kappei Yamaguchi, Hiroaki Hirata, Ikue Otani, Yuriko Yamaguchi, Kazuki Yao, and Chō. It also features Hōchū Ōtsuka as Zephyr, an ex-naval Admiral, with Ryoko Shinohara and Teruyuki Kagawa as Zephyr's henchmen Ain and Benz respectively. The events of the film takes place near the end of the fifteenth season of the One Piece anime series during the "Z's Ambition" story arc, which serves as a prologue. The film revolves around the Straw Hat Pirates battling against Zephyr, considered to be the most powerful enemy they have faced yet.