Watch Sgt. Pepper's Lonely Hearts Club Band for Free: How to Stream the Movie Online at 123Movies. . A small town band makes it big, but loses track of their roots, as they get caught up into the big-time machinations of the music biz. Now, they must thwart a plot to destroy their home town. Built around the music of The Beatles, this musical uses some big name groups like Peter Frampton and Aerosmith.