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Dapper, diminutive screen comedian Monty Banks stars in Keep Smiling. The inventor of an automatically inflatable life jacket, Banks gets an opportunity to demonstrate his invention after saving the life of Rose (Anne Cornwall), the daughter of steamboat executive Ryan (Robert Edeson). Through a series of misunderstandings, Ryan is led to believe that our hero is speedboat champion. Naturally, Banks is forced to prove his prowess in the water, leading to a typically hair-raising slapstick climax. Monty Banks may not have been the most memorable comic on the silent screen, but few moviegoers could ever forget his films' action-packed finales.