When Ilpalazzo sends Excel and Hyatt on a mission to gather more resources for Across, the duo find themselves journeying out to the mountains. However, whether it’s panning for gold or hunting for meat, finding resources in the middle of a survival drama setting promises to be far from an easy task for our intrepid heroines! And elsewhere, Watanabe, Iwata and Sumiyoshi face trials of their own as they attend a bizarre training seminar and meet up with a new colleague—the beautiful and dangerous Misaki Matsuya.

Having finally gotten the hint from ACROSS that he should hurry up the whole invasion thing, Ilpalazzo orders Hyatt to perform final preparations for the conquest of the city of "F", and orders the bungling Excel to keep her nose out of it. Excel has no time to be dejected, though: the Puchuus have returned, and she and Hyatt must help a band of freedom fighters thwart the machinations of an evil conqueror and his really big spaceship! But even after our favorite ACROSS agents defeat the invaders and destroy their ship, the city of "F" gets squashed by the falling debris. Well, them’s the breaks…