Huge Giant Bird Birdon has emerged from the Mt. Okuma. Apparently, Birdon only tried to set up a nest for its eggs but the nest as well includes several civilian captives, thus prompting Xio in a rescue operation. Angered by the attack, Birdon rampages and Daichi as Ultraman X arrives the scene but soon succumb by the poison injected by the monster. At that time, Alien Fanton Guruman triggers a secret operation!?
