Emperor Muge Zarbados and his Empire of Death decide that their next conquest will be the faraway planet of Earth. Muge becomes even more fearsome because of Shapiro Keats, a power-hungry Earthling-turned-traitor. It's up to Shinobu, Sara (Shapiro's old girldfriend), Masato, and Ryo of the Jyusenkitai/Cyber Beast Force to pilot the four Jyusenki/Beast Mecha (Eagle Fighter, Land Cougar, Land Liger, and Big Moth [a mammoth mecha]), which can combine into the giant mech Dancougar. (Source: ANN)

In the year 2201, one year after the Yamato saved Earth from radioactive contamination, a new threat emerges. The Yamato makes its final journey to save the Earth from this new threat. Earth has almost recovered from the battle against Gamilus, and reconstruction has expanded to the other planets. When former Yamato crew-mates discover a strange, garbled message that seems to be coming from a white comet headed towards Earth, they hijack their old space fortress and begin a new battle.

The war between the Heike clan and the Genji clan continues. This time, Nozomi has to fight a powerful supernatural enemy and make a choice: protect her friends and stay by Kurou's side, or choose her first love, Masaomi, which is the leader of the Heike, and her enemy.