Watta Takeo, a 12-year-old boy, is the pilot of the mighty robot Trider G7, who has to face the attacks of Lord Zakuron's robot monsters, attempting to conquer planet Earth.

Teenager Watta Takeo, after his father's death, inherits the family's space transportation company, also becoming its President. The company uses the mighty robot Trider G7, piloted by Watta himself, for the transportation activities, with the help of a crew: Mr. Kakikoji, accountant Kinoshita and Atsui the mechanic. Anyway, since the Earth is threatened by the crimes of Lord Zakuron and his robot monsters, Watta will have to fight against them with the help of the Trider G7 and its powerful weapons.—Luigi Marcucci