A wave of kaiju emerges from an industrial zone, prompting Capitan Gento and the SKaRD to engage in the relentless battle. Yet despite their efforts, the endless kaiju attack continues. Suspecting a link to Necromass Co., an advanced chemical company that researches kaiju carcasses and owns factories in the industrial zone, SKaRD rushes to the company’s CEO and renowned chemist, Dr. Mabuse. At Necromass Co.’s research facility, Dr. Mabuse explains the development of the damudoxin, a substance on the brink of achieving immortality. Meanwhile, Alien Damuno, who claims themselves as the “ruler of the universe” appears! Chaos ensues when damudoxin leaks from the destroyed tanks, consuming samples of kaiju carcasses and giving rise to the giant Gongilgan, the Demonic Carcass. Set in Tokyo, the capital of Japan, Ultraman Blazar and SKaRD clash in a showdown against the giant kaiju!

In the past, a young Mashiro Kumade, aiming to be Number One, threw himself into the lonely "Ring Batle". One day, guided by a fortune teller, he arrives at a place where he meets "companions" who would drastically change his detiny. These are the Gozyugers who united to face the Calamity. Kumade, who had been a lone wolf, gradually found his heart filled with the bond he made for the first time ever. However, even in those peaceful days, the footsteps of the end approached moment by moment. What is the "true wish" that Kumade harbors in his heart at the end of his harsh fate?