The truth about Stacey is that she has diabetes. Nobody knows... except her friends in the Baby-sitters Club.

But even they don't know the real truth about Stacey. Stacey's problem is her parents. They won't admit she has the disease, and they drag her to practically every doctor in America!

Seeing so many doctors made Stacey lose one friend, and she won't let it happen again. Especially now - when the Baby-sitters Club needs her more than ever.