After their parents are murdered, young twin brothers Thor and Rai are abandoned on Chimaera, a hostile planet where criminals are sent to die. With extreme temperatures and carnivorous plants, it is a brutal world where mankind has been reduced to a savage state. The only hope of escape lies in conquering the planet and its inhabitants, rising above them all as the Beast King.
Episode 1
The first episode describes Thor and Rai's arrival at Chimera, and how the twins got separated.
Episode 2
An unconscious Thor is taken to Ochre Ring, and after waking up he finds out that he was saved by Tiz, a female member of the Sun Ring who chose him as her husband.
Episode 3
Chen, the Top of the Sun Ring, approaches the Ochre Ring to take Tiz back; meanwhile, Thor and Tiz go in search of a wise man named Colin.
Episode 4
Thor asks Third to take him and Tiz to see Colin. There he figures out who could be the responsible for their parents's death, and has a shocking revelation about his future.
Episode 5
Thor was set-up by Third, and unintentionally challenged Top to a try, a life or death battle to decide Ochre Ring's true leader.
Episode 6
Four years after Thor became Ochre Ring's Top, he must face the threat of the Blanc Ring leader, who is actually an old acquantance of his.
Episode 7
The true identity of the White Wolf Demon is Zagi, the one who protected the Klein brothers when they were first sent to Chimera. He tells Thor that the myth of the Beast King is a lie. He proposes that they should join together to wage a war of independence.
Episode 8
Karim and Thor were trapped in a cave during a blizzard. She became angry at him as Zagi chose him as his new partner over her, but Thor himself has some feelings to tell her.
Episode 9
Thor and Zagi prepare themselves to set for Hecate, in order to continue their plan, but an unexpected tragedy put them against each other.
Episode 10
As the new Beast King, Thor is granted access to the Dagger Pagoda, the orbital elevator and is finally able to leaving the planet. The last words of Zagi is tormenting Thor with inexpressible anxiety. Arriving at the space port, Thor is greeted by none other than Odin, the one who murdered his parents. He tells him the real reason for exiling Thor on Chimera.
Episode 11
Odin decides recklessly to proceed with his own plan by activating the device resulting in acceleration of the planet's rotation and the destruction of human life. Thor is heading to the "Valkyrie", the computer control system, in an attempt to deactivate the device.
