Geki Jumonji, the new Space Sheriff Gavan and his partner Shelly are about to raid a deal involving Mad Gallant, a member of the Space Criminal Organization Genmaku. However, instead of waiting for backup, Geki decides to confront the enemies himself. However, the deal is proved to be a trap, with Mad Gallant defeating Geki and Shelly apparently killed one of his companions. When Banban Akaza from the Fire Squad arrives, he finds a wounded Geki and Shelly’s body missing. Eager to avenge Shelly, Geki is taken off the case by Director Sophie, who claims that in his current state, he is a liability. However, upon having a glance on her monitor, he finds the name of Marika “Jasmine” Hiwatari, a member of Earth’s Dekarangers with the power of psychometry, and Geki interrupts the marriage of Marika’s fellow Dekarangers Senichi and Koume to ask for their help under a request from the Galactic Union Police.