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.

Having survived the attack on her sanctuary, Eva finds herself on a strange planet called Orbona. She meets a telepathic waterbear named Otto and a surly alien named Rovender who has a promising connection to humans.

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.

Eva tracks down the Arsian sage, Darius, who reveals a devastating account of humanity’s last days. Eva doubles down on her quest to find other humans as the alien bounty hunter Besteel closes in.

With a human civilization in sight, Eva leads a risky mission across the most perilous obstacle yet.

Eva learns the truth about humankind. Meanwhile, Besteel tracks Eva down for a final showdown.