Plotting to avoid another boring day at school, elementary-schooler Lucy Millaway decides to dress as absurdly as possible in hopes of being sent home. When she tops off her ensemble with a stovepipe hat from her brother’s magic kit, however, Lucy suddenly finds herself on a dirt path in the middle of the woods, where she encounters a boy and a girl walking to school. Accepting their invitation to accompany them, the bewildered Lucy soon learns that she is in rustic Spencer County, Indiana—and that her new friends are young Abraham Lincoln and his older sister, Sarah.