Joanie regrets agreeing to join a popular girls' club with friend Jenny Piccalo when the snobby club officers try to keep Jenny from passing the initiation ritual by altering it to include stealing a park statue.

While her parents week-end in New York and sister-in-law Lori Beth flies to visit faraway husband Richie, Joanie Cunningham must prove more than her babysitting mettle when she is challenged with both a sick baby nephew and a broken furnace.