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?

Aspiring celebrity Yahiro Kuwata moves to Tokyo and becomes a "Cursed Property Resident Talent," living in haunted locations for TV and social media. As he hops between eerie apartments, an old inn, and a séance-filled share house, he uncovers the dark mysteries hidden within. But his extreme sensitivity to spirits makes him an easy target for relentless supernatural attacks. In one particular cursed property, he stumbles upon an unimaginable horror and a shocking truth that will change everything.