Rosie is a good dog and a faithful companion to her owner, George. One day George takes Rosie to the dog park, but the park is full of dogs that Rosie doesn't know, which makes her feel lonelier than ever. When big, loud Maurice and small, yippy Fifi want to play, Rosie's not sure how to respond. Is there a trick to making friends, and if so, can they all figure it out together?