The Giant Bird Monster, Birdon appears in Ookumayama. And it looks like it's getting ready to spawn. But when civilians are discovered trapped within the nest it builds in order to lay it's egg, Daichi and the Xio team begin a rescue operation. Attacking Birdon to lure it away from the nest, the creature becomes enraged. Daichi unites with Ultraman X to save his friends. Birdon's poisonous beak has X on the ropes. What idea does Gourman, the Fanton Alien scientist, have that can save the day?
Pendant que le Xio organise une visite guidée de la base, un nouveau monstre fait son apparition. Il s’agit de Birdon, le poulet volcanique ! Notre héros fera-t-il le poids face à ce terrifiant adversaire ?
