Six hundred years after Ginga Senpuu Braiger, Jupiter has been destroyed, and numerous planets have emerged from its remains, leading to further colonization. To counter the rising lawlessness, Don Diego Condor assembles Billy the Shot, Samanosuke Dodi, Layla Minesato, and Shuteken Radcliffe, also known as J9-II. They pilot Cosmo Bikes that combine to form the robot Baxingar.