Young Sadie passionately wants to be happy. It seems to her that her soul is constantly in the waiting room, ready to meet the train of happiness. Sadie is not sitting idly by. She strives to gain knowledge, achieve love, make a career, but... She manages to go to college... but fails to graduate. She manages to win the heart of a young man... but not the one she loves. And red-haired Sadie will have to endure many more trials before the train of happiness appears in the distance...