Emperor Muge Zarbados and his Empire of Death resolve to target the distant planet Earth. Muge"s menace escalates thanks to Shapiro Keats, a power‑obsessed Earthling who betrayed his homeland. The defense falls to Shinobu, Sara (Shapiro"s former lover), Masato, and Ryo of the Jyusenkitai/Cyber Beast Force, who command four beast mecha—Eagle Fighter, Land Cougar, Land Liger, and Big Moth—a colossal unit that merges into the giant Dancougar for Earth's survival in the battle today.