a long time ago, the fragments of demons that were shattered in the universe are still chaotic. ccc。 a villain who did not know his true face was using these demon fragments to harm all directions and extended his claws to the land of light. ultraman zero and his apprentice ultraman zeta bravely stood up and faced the enemy head-on. after a fierce battle, ultraman zeta chased the monster to the earth alone. on earth, people formed a defense army to fight against the monsters that appear in daily life - the "armory of the mecha force ( storage）”。 in this army, there is a passionate young man - shunshu, xiachuan. the moment the universe monster arrives on earth, ultraman zeta and haruki meet. since then, the battle story between the two passionate young men has begun.