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!

When GUTS-Select investigate mysterious disappearances, they learn it is work of an evil alien who intends to invade the Earth, called Professor Gibellus. However, just in time, a mysterious woman appears to help GUTS-Select.

A mysterious space sage entrusts Yuma with challenges that surpass the limits of his imagination with a stake too high. He asks, "Should you fail… then you… will lose your power as Arc." The burden of protecting Hoshimoto City alongside SKIP members are twisted by Sascal, who manipulates them, sending challenge after challenge toward Yuma. Battling giant kaiju, an evil alien bent on destruction, and a warped dimension where even time itself is distorted, Yuma must confront the ultimate test. Will he... will Ultraman Arc overcome the greatest challenge yet and protect the future, surpassing the limits of the power of imagination?

Set two years after the events of Ultraman Trigger, an ultra-ancient threat re-emerges, leading to the return of Ultraman Trigger and Ultraman Zett to save the day, but all is not as it seems.

After the events of Ultraman Saga, Ultraman Zero goes to the Monster Graveyard to train with his new powers. There, Zero encounters Alien Bat Glacier; a follower of the original Bat that took over the alternate world. He revives the monster army, the Four Beast Warriors of Hell from the Graveyard to fight Zero for defeating his leader.