When the Heavenly Tomb was first opened, the evil forces in heaven and hell fought for its final ownership, triggering a war between the three clans. In order to maintain the peace of the Sky Tomb world, an organization more ancient than the three major camps emerged, they are the Sky Tomb Guardians. The guardian of the sky tomb sealed the three tribes in different planes. The moment the sealing power disappears, the three tribes will start killing again.
In order to face another war between the three races, humans must challenge the [Battlefield] again and again to obtain evolution points to improve their strength.
In order for the tribe to develop better, humans can only obtain various resources through the virtual battlefield and exchange them for different tribe buildings from the guardians of the sky tomb.
