Before embarking on a long journey, the Master of the Universe divided his authority into fragments and entrusted them to his successors.

To maintain order in the universe, the successors founded the space exploration organization COSMOS.

COSMOS became the premier exploration organization in the universe, exploring uncharted planets, recovering ruins and artifacts of ancient civilizations, rescuing those in distress, and subjugating space pirates and unidentified life forms.

The universe was a world where countless races coexisted, and among them, humans were recognized for their outstanding adaptability and infinite potential, leading them to be designated as a protected special species.

Though humans were few in number, their ability to survive in any environment and their unpredictable growth potential made them a subject of interest for many races.

However, the doors of COSMOS were not open only to humans.

Beings who inherited authority, humans, alien races, and many others with their own purposes became members of COSMOS to pioneer the unknown universe.

And today, a new exploration mission begins.