While attending a show, a World War I veteran has a flashback to his days as a vaudeville performer: When the veteran's female vaudeville partner accuses his male partner of helping to steal a necklace, the male partner breaks off his relationship with her because she is too attentive to another man. The veteran and his male partner then join the army entertainment unit, and the male partner is about to marry another woman when his old love appears, performing in a Paris show to entertain soldiers. The veteran intervenes to reunite his old friends. During a bombing, the woman is caught in a scuffle with the other man in a cellar shelter. The male partner rescues her by fighting her assailant and then proves the man is a German spy. Declared a hero, the male partner wins back his old sweetheart.