The mantis aliens return to Tarra to genetically modify the human bodies whose spiritual beings are slowly becoming freed from their fleshly bodies and thus escaping their prison. Additionally, both the Grey Creatures and the Plasticine Dolls return, dumping more of their undesirables onto Tarra.

The mantis capture Bethany and follow her advice in the creation of the genetic modifications. The mantis release the plague upon Tarra, but Bethany manages to stop it before it can completely infect the entire planet. The results of the plague are devastating and she devises a clever scheme to undo its awful effects.