With the next fortune being "Uao", the Gokaigers seek out their next clue until they find a sign at an amusement park that says "Greater Power found here", and they find Momo Maruo, the former OhPink of the Ohrangers. However, Basco has also managed to find this Greater Power, and has been approached by Goro Hoshino, the former OhRed.

In order to defeat the more powerful Action Commander Shieldon, who boasts an impenetrable shield, Doc works on developing a new more powerful weapon.