Ever since Izzy Wilder’s mom died, she’s wanted life to feel normal. She plays video games with her little sister, helps her grandparents around the house, and takes care of her best dog, Akka. But losing her mom is far from normal, and for Izzy, who is autistic, it feels like the end of the world.

When mysterious lights flash across the mountains outside Izzy’s house one night, and suddenly everyone except her and Akka seem to have disappeared in an instant, Izzy is more alone than ever. But Izzy is a fighter and she won’t lose anyone else in her family, even if it means battling terrifying gray, ugly monsters and decoding cryptic messages that seem a lot like her mom talking to her from beyond the grave.

In the face of disaster, Izzy and Akka embark on an epic adventure filled with nail-biting suspense, unexpected allies, and life’s greatest mysteries as they uncover the true endurance of the human spirit and save the world.