Hunter discovers that the Invectids have invaded the city of Nuuma and wants to go help the Nuumans, but is disappointed that the other Spider Riders are reluctant, even with the possibility of a third Oracle Key being there. Grasshop appears again with the unstoppable Goldenbore to steal Hunter's Oracle Keys; can the Spider Riders create an opening so Hunter can defeat this foe or will Buguese and Aqune turn victory into defeat?