If there's one thing Smiley, a young Pit bull, knows how to do, it's, well ... smile! She's had her infectious smile since she can remember, and it brings everyone around her -- including herself! -- joy.

So when she's adopted by a lovely family in Boston, Smiley doesn't expect anyone to dislike her. But she quickly learns that, sadly, Pit bulls have a reputation for being mean, and even Smiley's characteristic smile won't be enough to make everyone love her, and her smile begins to fade ...

As Smiley learns to navigate a world where she's judged by her appearance, she'll find a way to change the hearts and minds of those around her. And maybe --just maybe -- she'll find a reason to smile once more.