In order to stop Corona Nova, an abnormal solar phenomenon that threatened to destroy Suda Doaka World, Superior Dragon SR released all of its Gold Sprits and lost its life. Master's power was poured into its now empty body, and Dark God was born. With no will of its own, it follows Master's commands to wreak havoc.

Not only the Chosen Ones, but even the Berserk Dragon themselves are unable to attack their former master.

The evil that once threatened Suda Doaka World, which was in Superior Dragon's memory, was revived as the Gundam Head by the immense energy of the Guiana Point.