Last Chaplins cung'im lang'phim, full sound effects, was made when everyone else did for the radio. Charlie turned around modern society, computer age, (The use of sound in film?) And progress. First we see him frantically trying to keep up with a production line, tighten the bolts. He was selected for an experiment with an automatic feeding machine, but different risks led his boss to believe he was mad, and Charlie was sent to a mental hospital ... When he was out he is mistaken for a communist while waving a red flag, in prison, leaves a jailbreak, and was off again. We follow Charlie over many more adventure before the movie is out.