Hallie Lapp's parents, Jim and Nora Lindstrom, decide to uproot themselves from northern Iowa after they retire. They move to southern Iowa to live near their daughter and her Amish family. Aunt Tootie comes along and moves into the grandfather house on the property. While the Lindstroms adjust to living in an Amish community, they get news that Nora and Tootie's nephew and his wife have been killed in a car crash. Surviving them is a fourteen-year-old daughter who will be put in foster care if they don't take her in. Tootie is against having a teenager underfoot, but the Lindstroms think it's their duty to raise their great-niece. They find her to be an enthusiastic bundle of energy named Joy.