Sabine is working on a mixed-species spaceship when it abruptly comes under attack by a strange monster. When she encounters Eirlys, a set, they manage to hide together and survive the assault.They're soon rescued by Naomi, captain of a mercenary ship which was hired to kidnap the two survivors but at the last minute chose to rescue them instead-putting them, Naomi, and her crew in peril from the government who hired them.And if being wanted wasn't enough, the monster is still out there.