Mario is having a hard time finding someone to play with. His sister, Marissa, is playing with Cousin Rosie, and his cousin Chico is off to baseball practice. When Nana asks Mario to babysit his cousin Gia while she bakes, he finds that babies can be a handful. But even when he feels that he has reached the end of his rope, it is baby Gia who reminds Mario that a family is built on love and caring.
