Retsu Ichijouji (Uchuu Keiji Gavan) is now a special detective for the Galactic Federation Police and trains Geki Jumonji a.k.a Gavan Type-G as his replacement. It has previously confirmed that Gekiranger's Riki Miura will play as the new Space Sheriff Sharivan, Kai Hyouga, and Tomica Hero Rescue Force and Kamen Rider OOO's Hiroaki Iwanaga as the new Space Sheriff Shaider, Karasuma Shu.
The film is to commemorate the 30th Anniversary of the said Metal Hero series. Space Sheriff Gavan The Movie premieres on October 20th.