Even super heroes have to grow up, thats what little Ultraman Taro learns in this family oriented film featuring all of Tsuburaya Productions most memorable hero and monster characters. Little Ultraman Taro Lives On the Planet Ultra, located in Nebula M-78 with his mother and father(mother and Father of Ultra) who teach him the mysterious of the Ultra Warriors. As Taro grows up he studies the martial arts techniques used by his elder brother Ultraman, Ultra Seven, Zoffy and Ultraman Ace before being sent to the planet Earth on his own to defend hunanity againts monstrous invaders from space.
But Taro time on Earth is cut short when the evil space lord Juda sends Grand Hing, a super powered robot monster to attack the planet Ultra itself. All of the Ultra Warriors must join together to battle the beast. But can even the combined super powers of all the Ultra Warriors match the might of the seeingly invincible Grand Hing?