Something strange happens at Rin’s favorite shopping street. The culprit seems to be a rat, but it is not just your ordinary rat. In search of the cause, Rin finds herself in danger, and it’s time for Arc to respond with his imagination!

A favorite of kids far and wide, the Dinosaur Professor, Shinya Makino has arrived in Hoshimoto City. And it seems he wants to investigate the fossil discovered at the mountain ridge. While Yuma is excited to see his childhood hero in action, Hiroshi seems troubled. As it turns out, the Professor was Hiroshi's teacher! Among all this, a lake suddenly appears at the excavation site...

As SKIP investigates a kaiju appearance in the mountains, they meet a strange clerk at the old Akebono Inn. Previously known as an UFO appearance site, the place brings out Shu's investigative skills, leaving Yuma and Rin baffled. What will be Shu's decision be when the inn's secrets are finally revealed!?

A giant robot suddenly falls from the sky!?

It keeps repeating the same phrase over and over.... Is Givas, the mechanical colossus an enemy or a friend?

Based on Givas' action, Yuma believes it has a will of its own, and decides to confirm it through communication. His actions may convince his team, but will the harsh reality get in the way...?

Yuma is shocked by the meaning of Givas' word.. He ends up acting harshly towards Shu and is overwhelmed with regret.

That's when "he" comes to save Yuma from gloom!?

With the GDF's attack imminent, Yuma infiltrates Givas as a last resort, and comes face to face with the shocking truth!

Kaiju continued to appear from the space rift even after Zangill's fight. In order to put an end to the seemingly endless fight, Shu creates a plan involving both SKIP and the GDF. Unfortunately, they absolutely need Ultraman Arc's help for it to work... Will Yuma be able bring the plan into success!?

Ultraman Arc has disappeared into the space rift, following Hellnarak. Who does Yuma meet once he wakes up? When strong feelings break the walls of dimensions, will the fates of both worlds forever change!? Arc's final beam carries everyone's wishes and heads towards Hellnarak!