As the alien, Dr Tycho is being chased by an enemy fleet, a team of pilots lead by Jun help him out. Upon landing on Earth he teams up with a scientist named Dr Dotori who works with the team of pilots. Dr. Dotori and Dr. Tycho have Jun and his friends pilot a robot to find the Iron Man Trio. The Iron Man Trio must defeat the enemy fleet before they launch a nuclear attack.

"The Dark Empire is determined to conquer the Universe and get rid of anyone who stands against it. The Space Thunder Kids, made up of three valiant youths, are responsible for patrolling the space and obstructing any invasion by the Dark Army. After his planet is destroyed by the Dark Army, Dr Sparta joins up with Dr Rhodes from the Guardian Army on Earth in building three giant robots to combat the imminent invasion. When the scientists are captured it is up to the Space Thunder Kids to use the robots and thwart the Dark Empire’s nefarious plans." - Official Synopsis . Made up of eight animated films from South Korea. Seven of the films were already distributed by IFD films with pre existing English dubs. The eighth film, "Iron Man Trio" (철인 삼총사) did not have a pre existing English dub from IFD .