Big Rally! Titan Boy! is the second movie of Choushinsei Flashman. It is a theatrical edit of episodes 15 to 18 (The Giant Robo is Worn Out, The Human Minimini Plan, The Mysterious Giant Reckless Car!

In 1966, five infant children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The ...