To fight against the mighty Penguin Empire, a secret organization known as the “Prince Beauty Salon” has developed the Daimidaler, a giant humanoid robot powered by a source of energy known as “Hi-ERo particles”. Since high school student Kōichi Madanbashi possesses a high amount of this rare energy in his body, the organization sends Kyōko Sonan to get him to pilot the Daimidaler. However, to release his special power, Kōichi must do something perverted with a girl.