Charles and Lizzie Peterson love puppies. Their family fosters these young dogs, giving them love and proper care, until they can find the perfect forever home.<br /><br />After getting home from school, Lizzie is surprised to hear that her parents are fostering another yorkie puppy. After all, their last yorkie foster, Princess, was a little spoiled. But Biggie is Princess's total opposite: He's energetic and tenacious! Can Lizzie find this teeny puppy with a big heart a perfect home?