Doing the right thing can be hard! When prized possessions start going missing, Cody gets a crash course in the most important rules of all--the rules of life.

In Cody's life, many things are hard to predict. Like why her older brother, Wyatt, is obsessed with his new bicycle called the Cobra, or why her best friend Pearl suddenly wants to trade favorite toys. Pearl says she will trust Cody with Arctic Fox because Cody is a trusty person. But Cody doesn't want to give up her beloved Gremlin, and she regrets it as soon as she hands him over. When the Cobra goes missing, Cody has to decide for herself who is trusty and who is not. If only she had Gremlin to talk to! Surely Pearl wouldn't mind if she secretly traded back...it's not stealing if it belonged to you in the first place, right?