Bandit is an adorable black and white Shih Tzu with a mask-like marking over his eyes. Lizzie discovers him at a highway rest stop restaurant. He was abandoned by his owners because he needs an operation and they couldn't afford it. Lizzie and her family take Bandit in and begin fundraising for the expensive procedure. Maria and her uncle Teo are also a big help. Maria and Lizzie establish competing dog-walking businesses to raise funds.
Everyone who meets Bandit falls instantly in love—except for Uncle Teo, who thinks he's a little too small and fluffy. In the end, Bandit's operation is a success. Uncle Teo is won over by the resilient puppy and agrees to adopt him.