Tired of his pet dog, Chester, always biting him in the rear and just generally being incompetent, Zeke decides to draw his own ideal pet. He creates Sketch, a dinosaur-like hybrid animal that is intelligent and eats normally inedible objects like furniture and fences. Sketch causes chaos throughout the neighborhood, and Zeke and Jay realize that Sketch is just lonely and looking for someone like him. With that in mind, they find Sketch a companion — a platypus. A few months later, they send an egg for Zeke to babysit.