Sophie often sees old Mr Jenkins walking his Labrador puppy, Buttons, and wishes she could have a dog of her own just like her. Lively Buttons loves the outdoors and is always running off, even though she knows she shouldn't. Then one day, Sophie finds Buttons in the street on her own. She thinks the puppy is running away again, but Buttons isn't playing around this time - something at home is very wrong, but how can she let Sophie know...?