The fourth season of Future Card Buddyfight. Gao Mikado, a sixth-grader from Aibo Academy elementary division, has been chosen to represent Dragon World in the World Buddy Masters tournament. Guided by a messenger who claimed to be Saint Holy Sword Dragon, Gao went to Dragon World itself in search of his new Buddy! As if that was not an adventure enough, Gao interfered with the seal on an ancient shrine and released a forbidden monster! Known as the Demon Lord Dragon, Batzz, this forbidden monster had once devastated the continent of Dragon World. Batzz is a tyrannical monster which pays no heed to anyone. Yet, Gao believes he can become Buddies with even such a monster, and entered the tournament with him.