On their first official mission to assassinate suspected "butterflies," Economos and Murn bond, and Peacemaker and Harcourt reach an understanding. But the whole job goes sideways with the arrival of Judomaster.

The team scouts the apparent hub for the aliens' food supply, only to come face-to-face with a full-fledged invasion. Meanwhile, Auggie's attempt to sell out his son to the police is complicated by Murn's mysterious contact.