A Hollywood writer in need of some research material finds Susan, a 17 year old delinquent, on his doorstep on a rainy Christmas Eve. He learns her life, decides he won't let her be sent to the prison farm, and therefore contrives to have her marry him in Las Vegas. Before she awakens after their all night ride back, Joe leaves for his mountain cabin to write a play about Susan. In his absence, Joe's old Navy pal talks Susan into studying acting. Finally Joe's play opens with Susan in the cast, and she immediately becomes the talk of Broadway. However, she walks out on the play to go back to Joe, who has since realized how much he really loved her. She has little trouble convincing him that age differences mean nothing when two people love each other.