The mysterious spaceman used the ultimate combat device to inject all the monster energy into a human body. Ultraman X and Ultraman Zero pursued him. In order to save Zhu Xingfu's life, he gave him a monster armor bracelet, so Zhu Xingfu could convert the energy into monster armor to fight against the monster girls and monsters created by the Chitons. However, as the battle escalated and more and more monster girls appeared, Zhu Xingfu began to find that his power became increasingly difficult to control, and his identity was gradually exposed to everyone. This is a story about friendship, responsibility and strength. Can Zhu Xingfu finally stop the conspiracy of the Chitons and rescue Hayakawa Haru, or will he lose himself in this disaster?