Were born in the bulldog star in the distance Great Nebula in Andromeda of 100,000 light-year far, and the bulldog Sedarim which came over to protect peace of the earth did Private Teacher as woman of the earthian, Izumi Koda in usual times, but fought for the peace of people of the earth as a heroine of the justice to transform itself into bulldog Sedarim as soon as a case got up once, and to exterminate a villain every day. However, King muka of pithecanthropus Wakusei Parnasse plotting earth Seifuku plans the plan that there is to remove bulldog Sedarim obstacling to the ambition! Abducted student Masaru of the Izumi, and it brainwashed it, and were snideness to fit bulldog Sedarim in the trap!
