Big Brother finds out that not all babies are the same. Big Brother
learns that not all little siblings are the same when his parents bring
home a baby girl. He thinks he learned all about babies when Little
Brother was small. However, Sister is very different. Other things are
different too. Big Brother is old enough now to help keep an eye on the
baby when Mommy and Daddy are busy and watching after Sister is not as
easy as it sounds. But despite all the trouble she causes, Sister finds
her way into Brother's heart, and that is where she will stay.