Abe is asked to run for the State Assembly. He reluctantly accepts and wins, but after his first term in Springfield, Illinois, he decides to study the law instead. When Mary Todd (Ruth Gordon) visits her sister Elizabeth Edwards (Dorothy Tree) and her wealthy, influential husband Ninian (Harvey Stephens), a party is held in her honor. All the eligible bachelors show up, including Abe's fiercest political rival, Stephen Douglas (Gene Lockhart). However, it is the homely, unpolished Abe who catches Mary's fancy, much to her sister's chagrin. Ambitious, Mary senses greatness in him and is determined to drive him to his rightful destiny, despite his lack of ambition. Abe does ask her to marry him, but changes his mind at the last minute, discomfited by her drive, and leaves town. After thinking things over, however, he asks for her hand again. She accepts. Years pass, and they have several children.