When divorcee Rosie falls for an older, rather conventional man, the family's all-female bliss is destroyed. The ensuing havoc is seen through the eyes of 12-year-old Kitty.

As Gerald becomes a regular visitor Kitty determines to make trouble. She begins a vicious sabotage campaign, and Rosie can do nothing to stop her. But when Gerald unexpectedly saves her bacon, Kitty almost starts to like him.

Gerald offends Kitty just when she is beginning to trust him. But when things go wrong, she is glad to have him around.

The family is back to three females... but they miss Gerald.