Film to open in Japanese theaters on March 14, 2015

The official website for the Ultraman Ginga S tokusatsu series announced the Gekijōban Ultraman Ginga S Kessen! Ultra 10 Yūshi!! (Ultraman Ginga S the Movie: Showdown! Ultra 10 Warriors!!) film. The movie will open in theaters in Japan on March 14, 2015, and Tsuburaya Productions began streaming a teaser trailer:

A transcription of the teaser's text and dialogue can be found at Tokusatsu Network.

In the film, Earth regained peace, but suddenly a huge spatiotemporal castle appears with a new enemy to challenge Ultra Ginga and Ultra Victory. The UPG (Ultra Party Guardians) gather with Musashi Haruno/Ultraman Cosmos to investigate. They discover that the female warrior Alena sealed a variety of Ultra warriors within the castle.

The one-hour film will star Takuya Negishi as Hikaru Raido/Ultraman Ginga and Kiyotaka Uji as Shou/Ultraman Victory, Taiyo Sugiura as Musashi Haruno/Ultraman Cosmos, and Arisa Komiya as the female warrior Alena who uses a magical mirror to trap Ultra warriors. The site also lists actors Ryuuichi Ooura (Captain Yoshiaki Jinno in Ultraman Ginga S ), Yukari Taki (Arisa Sugita in Ultraman Ginga S ), Takahiro Katou (Gouki Matsumoto in Ultraman Ginga S ), Takuya Kusakawa (Tomoya Ichijouji in Ultraman Ginga ), Rina Koike (Sakuya in Ultraman Ginga S ), and Moga Mogami (Mana in Ultraman Ginga S ).

Series director Koichi Sakamoto ( Kamen Rider Fourze, Kyoryuger, Aka x Pink ) will return to direct the film. Yuji Kobayashi ( Pretty Guardian Sailor Moon Crystal, Smile Precure! ) and Takao Nakano ( The Rug Cop, Blind Beast vs. Dwarf ) are penning the script. Rock band The Alfee's Toshihiko Takamizawa will write the theme song.

Source: Animate via Tokusatsu Network (Link 2)