[2] 15-year-old Mandy Underwood returns home from summer camp to find she no longer feels a connection to her friends and family.
After spending a summer playing tennis and meeting new people, she no longer shares the shallow interests of the vapid friends of her small Rhode Island town.
Lydia, Patricia, and Elaine try to show their support by throwing a horse-themed party for Mandy and even give her an expensive saddle to celebrate the occasion.
Mandy finds Ted intriguing and they begin a long-distance relationship, writing each other daily letters.
Mandy writes a long note to her parents, apologizing for leaving and, with her beloved horse Teddy, begins a new life in Milwaukee.