Welcome to Megalopolis! Once a peaceful Earth city, it's now a haven for criminals aided by the nefarious Alienizer arms dealer, Agent Abrella. Now, it's up to Ban Akaza and the Special Police Dekarangers to protect the Earth from the invading Alienizers and finally bring peace and justice back to the planet.
The Dekarangers respond to a disturbance in the city. On arriving, they find the area under attack from three brightly-coloured people. They fight them but they steal Machine Bull to chase a crow, which is apparently their enemy. They crash and are arrested by the Dekarangers. At DekaBase, the Dekarangers discover that their prisoners are Bakuryuu Sentai Abaranger.
Space Squad: 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.
