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One day, Hikaru and his friends are swallowed up into a distorted space-time and get trapped at the Furuhoshi Primary School.
The mysterious robot Jean-Killer and the new transfer student Ichijouji, who are they? And who is Tiga Dark, the giant who emerges from the dark and now stands between Jean-Killer and Ginga?
It turns out that Hikaru and his friends are not the only ones that are swallowed up into the distorted space-time. Misuzu's father and his work pals are also forced to spend the night at Furuhoshi Primary School.
At one time, all of the Ultra warriors, along with the monsters and aliens, were turned into Spark Dolls by the mysterious Dark Spark. Time passed, and the youth Hikaru Rido got hold of the mysterious Ginga Spark, which could return the monsters and Ultra warriors to their previous giant forms. In order to protect those dear to him, Hikaru Ult-Lives the Ultras and monsters and faces off against the evil monsters.