In the year that the Ogame style disciples have been in training, the Unabara castle town has transformed into an iron fortress bolstered by several moats and walls. Now Gama and his friends set out for the castle keep where Jinsuke awaits! While Kamedembo and Gensai distract the enemy, Gama and the rest try to force their way in through a different gate only to be met with Riko Murasame! It's time for the newly-evolved Gama to take on Riko, the master of defense!