One day, pervy high school student Madanbashi Kouichi finds himself pursued by a mysterious beauty and a gang of strange penguins. On top of that, a giant robot starts rampaging through town! Could Kouichi's Hi-ERO particles be the key to saving the city?

Unable to reproduce the original burst of Hi-ERO particles, Kouichi must discover the true power of Eros to defeat his new enemy, Antarctic Number 9!

A mysterious girl who loves penguins suddenly appears within the Penguin Empire. At the same time, Kouichi must become worthy to pilot Daimidaler.

The Penguin Empire finally succeed infusing a penguin with Hi-ERO particles and Kyoko meets a mysterious and handsome stranger with no memories.

A new robot, the Ritz Custom, appears after the Emperor discovers the secrets of Daimidaler. Will Kouichi be able to survive such a powerful foe?

With Kouichi out of the picture, a new main character arrives. The Penguin Empire has almost grasped complete victory. Now, Kiriko must fall in love.