Jumbo Machine Disappears in the Seabed. The realm of demons, whose base is hidden in the depths of the sea near the city of Kobe, feels threatened by the nearby marine research center and to avoid detection they destroy the buildings of the terrestrial base. The Getta team, suspicious of the accident, patrols the area all night but finds nothing. Meanwhile, little Genki goes to play with Maria, a little girl he has just met, and is stunned when she runs away frightened at the sight of two very shiny marbles that the boy wanted to give her in exchange for a favor. The Getta team meanwhile fails to control a second mysterious attack on the research center. Genki, dating her friend, intends to help her overcome her fear and soon discovers that two lights that frightened Maria were caused by a Demon Robot. The Getta team is warned and promptly intervenes: the enemy is found and defeated and the little girl is completely recovered.