Being ignored makes Sonnie feel sad as she watches Tucker get all the attention. When Tucker learns that Sonnie feels neglected, he embarks on a mission for children to see Sonnie differently, hoping it will cheer up his doggie friend. Through humorous attempts to recommend that Sonnie wear a pink tutu, a hat adorned with daisies, and even pink boots, Tucker finally lands on an idea that Sonnie loves.
Tucker's creative solution not only attracts children to Sonnie, it also gives her that much-needed self-confidence. Sonnie and the Pink Collar emphasizes the importance of feeling accepted and the power of true friendship.