After Stuart's mom is deployed overseas, his fun-loving dad, Clark, decides to move the family to Portland. There, he lives with his uptight brother Lewis and his family, which includes Stuart's confident, socially active cousin Ivy and her younger, overly curious brother, Leaf. Now living in a brand-new city, Stuart embarks on a variety of adventures with Ivy. Although the cousins do not always see eye-to-eye, Ivy and Stuart learn they are better together, and when they team up, they are unstoppable.
