Agams' rebellion using the Terraphaser was a huge shock to the TPU Technology Division's Special Section 3. Hotta deeply respected Professor Asakage. He feels terribly depressed after the TPU Internal Affairs investigate him, too. Marluru looks over the Terraphaser's blueprints, but what secrets are hidden in plan DG001?

Sphere is resurrected and the countdown to Earth's apocalypse starts. Head of Special Section 3 Masamichi Hotta starts to panic before the final attack from Sphere starts! However, his colleague Alien Metron Marluru is not breaking a single sweat. Marluru, who believes in Ultraman, ponders the crisis on Earth that Marluru experienced 10 years ago.

Ultraman Decker is almost here!! Introducing the passionate young man Kanata Asumi, who takes a stand when the world is put in danger by mysterious invaders, and the members of the defense force GUTS-Select that stand with him to fight against monsters! We'll also take a look at the new light — Ultraman Decker! Let's all get up to speed before the show gets started!!