A local newspaper, "The Bulletin", is under new management, with columnist Ann Mitchell being one of the staffers dismissed to "streamline" the paper, but not before being told to write one final column. Infuriated, Ann prints a letter from a fictional unemployed "John Doe" threatening suicide on Christmas Eve in protest of society's ills. When the letter causes a sensation among readers, and the paper's competition, "The Chronicle", suspects a fraud and starts to investigate, editor Henry Connell is persuaded to rehire Ann, who schemes to boost the newspaper's sales by exploiting the fictional John Doe. From a number of derelicts who show up at the paper claiming to have written the original letter, Ann and Henry hire John Willoughby, a former baseball player and tramp in need of money to repair his injured arm, to play the role of John Doe. Ann starts to pen a series of articles in Doe's name, elaborating on the original letter's ideas of society's disregard for people in need.