The winsome Anne Shirley is grown, has married her beloved Gilbert and is the mother of six frolicsome children. Anne and her family experience some unimaginable events when a strange family moves into a nearby mansion. The Meredith family is comprised of two boys and two girls, a minister father but no mother, and a runaway girl named Mary Vance. The clever and mischievous Meredith kids join Anne's children in a private hideout to carry out plans to save Mary from the orphanage, to help the lonely minister find happiness, and to save a pet rooster from becoming a soup ingredient. The sun-dappled world of Rainbow Valley is always full of adventure and delight.