A new criminal has begun operating in the steamy shroud that covers Steam City. The city police cannot keep up with him- he claims that his megamaton has teleport abilities, and it seems to be true. Whenever the cops get close, the machine vanishes in a mysterious fog. Enter the Narutaki Detective Agency. Child sleuth Narutaki hits the set, and quickly gets a hunch regarding the "teleporting" mecha. While the police chase shadows, Narutaki finds the real villain, and the battle is on. After Narutaki's megamaton, Goriki, defeats the enemy machine, the criminal reveals himself- he is Knight Phantom. He speaks of his hatred for Narutaki, and vows to destroy everything he loves. But Narutaki doesn't seem to know who this stranger is.
Chisa Yokoyama
Crimson Scorpion (voice)
Soichiro Hoshi
Narutaki (voice)
Hiroko Taguchi
Hsu Ling Ling (voice)
Cho
Kawakubo (voice)
Takuma Suzuki
Goriki (voice)
Tomomichi Nishimura
Dr. Guilty (voice)
Nobuo Tobita
Onigawara (voice)
Takashi Nagasako
Yagami (voice)
Akio Otsuka
Night Phantom (voice)
Norio Wakamoto
Machine Baron (voice)
Miki Nagasawa
Hsu Lang Lang (voice)
Takeshi Kusao
Le Bled (voice)
Hitoshi Kubota
(voice)
Akio Suyama
Doria (voice)
Yui Horie
Gina (voice)
