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.