When a terrifying intruder attacks her underground sanctuary, 16-year-old Eva is forced to leave behind her home and her robot caretaker, Muthr. Armed only with her survival skills and a cryptic note labeled WONDLA, she begins a search for other humans in an unfamiliar world.

Rovender guides Eva and Muthr to the fishing village of Lacus to meet a duplicitous merchant of human antiques. To get the information they need, Eva must make a risky bet at the Spiderfish Races.