Joining the Baby-sitter's Club after moving to a new town, Stacey helps her new friends outmaneuver a rival sitter group while coming to terms with her diabetes.

Stacey doesn't like to tell everyone that she has diabetes. Her friends in the Baby-sitters Club are supportive, but Stacey has lost friends who didn't understand her condition. Stacey's parents don't seem to understand, either; they're constantly taking her to new doctors. The truth is, she likes her doctor and just wants to spend her time living her life and hanging out with the club. Can Stacey find the courage to be honest-with everyone?