The newly recruited Banban Akaza arrives on Earth where he is transferred to the S.P.D. (Special Police Dekaranger) Earth branch located in the city of Megalopolis. Just when Banban is getting settled into his police unit, an arms dealer named Agent Abrera has just let loose a band of incarcerated criminals. It's up to the Dekarangers to apprehend all of the convicts and bring them all to justice.