Chaplin stars as an assembly-line worker driven insane by the monotony of his job. After a long spell in an asylum, he searches for work, only to be mistakenly arrested as a Red agitator. Released after foiling a prison break, Chaplin makes the acquaintance of orphan and becomes her friend and protector. He takes on several new jobs for her benefit, but every job ends with a quick dismissal and yet another jail term. The plotline of Modern Times is as loosely constructed as any of Chaplin's pre-1915 short subjects, permitting ample space for several of the comedian's most memorable routines: the "automated feeding machine," a nocturnal roller-skating episode, and Chaplin's double-talk song rendition in the nightclub sequence. In addition to producing, directing, writing, and starring in Modern Times, Chaplin also composed its theme song, “Smile,” which would later be adopted as Jerry Lewis' signature tune.