Dr. Baker posts an ad for another doctor, to relieve his workload (and Mrs. Oleson's constant pestering). He hires Dr. Caleb Ledoux, but doesn't count on him being black. The Ingalls are among the very few to accept Dr. Ledoux, as others are outright hateful and racist. Even Dr. Baker struggles with his prejudice and, to show his spite, gives the young doctor minor cases.