Young attorney John Mason (James Stewart) and his bride Jane (Carole Lombard) face a tough first year of marriage. Facing disapproval of their marriage by his boss and his mother, the couple strives to make things work in spite of financial and family problems. Further complications arise for the newlyweds when a baby comes into the picture. A bout of pneumonia for their son forces John to beg his boss for money to fly in a serum to save the infant.