In the vast expanse of space, Emperor Muge sets his sights on Earth as his next conquest. Backed by the formidable Empire of Death, he poses a grave threat to humanity. With the treacherous Earthling Shapiro Keats now aiding the Empire, their forces seem unstoppable. However, a glimmer of hope emerges in the form of a skilled pilot named Shinobu, Sara, Shapiro's former lover, and Ryo, an unexpected young hero. Together, they wield a secret weapon, Dancouga, the Super Beast Machine God, hidden within a Japanese lake laboratory. As they gear up for battle, the fate of Earth hangs in the balance against the Emperor's relentless onslaught.