After his mining partner Joe Pelton's death, wealthy bachelor Richard Chester adopts Joe's five young children and takes them East by train. The children are hellions upsetting the calm of the Pullman car en route to New York City, and his home upon arrival. Richard enrolls them all in school except for the youngest. His frosty society fiancée Ethel McVae refuses to have anything to do with the children. After seeing how Richard interacts with his stenographer Sally Lockwood when she helps him nurse the youngest child through a night's illness Ethel breaks the engagement. Richard declares his love for Sally, and they join to raise a family.