Marin Gumi

Takashi and his four friends, all 5th graders at Konan Elementary School, form the detective squad “Marin Gumi” in order to catch the great phantom thief of the century, Zigomar. Using an old German army U-Boat they find underground as their base, they utilize assorted secret weapons invented by Dr. Kisogawa, including the “Zigomar Detector,” in order to hunt down the great phantom thief of the century, Zigomar!