Kristy starts a softball team for her little brothers and sister. Soon they are challenged to a real live game by the Bashers, and Kristy has a crush on the Bashers' coach.
When a fight breaks out among the members of the Baby-sitters Club, timid Mary Anne finds herself becoming more assertive as a baby sitter and in her relationships with her father and friends.
Karen is frightened by a monster her stepbrother builds for the Halloween parade, but when the creature disappears, she plays detective to help find it in time for the big day.