Fifteen years ago, three childhood friends, Geki, Sherry and Okuma, were star-gazing and became inspired to go into space. As adults, Geki and Okuma join a mission to Mars, but their space shuttle goes missing before they could reach their destination. A year later, a monster attacks and a mysterious silver-colored warrior appears.

Space Sheriff Gavan vs Tokusou Sentai Dekaranger features the return of Yuma Ishigaki from 2012’s Space Sheriff Gavan: The Movie and the 2015 Space Sheriff Next Generation films. The first installment will join the two police themed heroes as they face a massive space crime organization.