Ultraman X and the defense team Xio. By watching the records of the battles of them, Yuka learns the necessary mind set to be a defense team member and a warrior fighting for peace.

Even among robots, there exist machines that threaten humanity, in stark contrast to the Special Airborne Armor that protect peace. What kind of threat could the machine lifeform Gillvalis, which even fought against STORAGE poses?

A diverse universe born from countless possibilities. Whose hands will the records of the battles between Ultraman and the Defense Team, which have unfolded in one of those possibilities, reach as they transcend time and space?