Gan and his girlfriend Ai are mild-mannered toy shop owners by day but, when evil lurks, they transform into superheroes Yatterman 1 & 2. With the help of a dog-shaped robot, Yatterwoof, they take on the Doronbow gang, lead by the sexy Lady Doronjo. Together, they must stop the evil gang from finding the four magical skull pieces that will allow them to control the world!