Mihos gets parasites, causing him a serious illness, so Cleo and her friends shrink to a tiny size to help heal him. This adventure becomes stranger and weirder than any of them would have envisioned.

Yosira joins the gang on a mission to the space station and factory, named Xerxs Works, where Xerxs are built. However, Cleo and Yosira disagree who will lead the assault on Xerxs Works.