The backstory takes place 3 years after Marscat Game's previous title, "Knightcore Universal". The world is ruled by cats as each city has its own Lord who leads and swears allegiance the king of the world - King Pera that takes form of a cat. Players are to worship the people of the moon who once ruled this land and dig up the history of this land in their remains.

"The moon in the sky then falls under the influence of some unknown forces. The shattered moon then turns into meteors and damages the land of Camelot, creating Time Caves by ripping the gravitational boundary with its powerful crash impact. Having lost the protection of the gravitational boundary, Camelot keeps getting harassed by the monsters that swarm out of the Time Caves. Players are to establish their own Legions, lead and deploy different Heroes and army types from all over, take out the monsters, and close the Time Caves that has become passage ways for the monsters."