An alien scientist escapes from his planet and finds his way to Earth. However, he is followed by the evil Joanna and her gang. On Earth, Joanna discovers a girl, Mira, who naturally emits powerful radio waves. Her efforts to capture the child leave Mira paralyzed and her friends Jong-hun and Dong-hyeok turn to the scientist for help. He is touched by their friendship and endows the children with superhuman powers which they use against Joanna and her thugs