A then 7-year-old Yuma Hize was camping with his parents in Mt. Shishio when Monolegos attacked, but somehow, he miraculously survived unhurt. This experience led him to pursue the path of kaiju biology research, and despite his traumatic past, he has not lost his "imagination" to dream. The now 23-year-old Yuma (played by Yuki Totsuka) joined SKIP in order to help those with similar experiences, and is now a rookie investigator assigned to the Hoshimoto City Branch.
Not long after, another large-scale kaiju disaster occurs. As Yuma sees the desperate people in front of him, a strong will springs into his mind, "I want to protect them!" It was at that moment when Yuma hears the voice of Rution, the being of light that he once saw as a child. The being says, "You and I are one and the same... Unleash your imagination!"
When the mystic light emerging from Yuma's hand embodies his entire body, his power of imagination fuses him with the light and he transforms into Ultraman Arc, the Giant of Light who protects the future! Alongside his precious friends, Yuma, as well as Ultraman Arc, gallops towards his everlasting dream!
But that's not all, just like Ultraman Blazar, it will also have an English dub and will also be broadcasted in major Asian cities and regions, namely in mainland China, Hong Kong, Taiwan, Thailand, Indonesia, and Vietnam, likely with their respective dubs as well.