600 years after Ginga Senpuu Braiger, Jupiter has been destroyed, and many planets have come from it, bringing about more colonization. To combat the increasing lawless activity, Don Diego Condor gathers Billy the Shot, Samanosuke Dodi, Layla Minesato, and Shuteken Radcliffe, a.k.a. J9-II. They pilot Cosmo Bikes, which combine into the robot Baxingar.