David a young Ninja is recruited by his master to steal the formula for a viral weapon. He is pilled against two wily opponents - a KGB operative and Martin who has kidnapped the scientist who destroyed millions of lives through his bacterial experimentation in World War II and has developed the new lethal serum. Martin's intentions are not honest he wants the virus for himself in his bid to dominate the world.

The Dark Empire is determined to conquer the Universe and get rid of anyone who acts against it. The Space Thunder Kids, made up of three valiant youths, are responsible for patrolling space and obstructing the invasion of the Dark Army.