Seven-year-old Maddie Reyes can talk to Mom, Dad, and 14-year-old Sadina, her sister and protector. But with the rest of the world - except for Bella, her robotic cat - she's too terrified to speak a word. Maddie wakes one night to find an intruder in the house, and now she's the only one who can identify him and save Mom from being arrested. Sadina suspects her best friend, Rio - especially now that Rio has started paying attention to another girl...