A long time ago, Quarton was a peaceful, cube-shaped planet inhabited by shape-shifting bricks called Tenkai. Unfortunately, the Corekai and Corrupted factions waged a devastating war that was led by the ruthless Vilius. His goal was to gain control of the Tenkai Energy source, but only the Tenkai Knights were able to defeat him. Despite the odds, Bravenwolf, Tributon, Valorn, and Lydendor emerged as victorious. Vilius subsequently called upon the powerful Tenkai Dragon, which the four knights managed to defeat. The fragments of this vicious creature were scattered all over Quarton. However, the Corrupted recently resurfaced, and they're even more potent than before. We're now in the year 2034, and four human adolescents-Guren, Ceylan, Toxsa, and Chooki-have uncovered an interdimensional portal that takes them to Quarton. There, they are picked by the Guardians to become the latest generation of Tenkai Knights. Their mission is to prevent Vilius from taking over both Earth and Quarton.