It's essentially the exact same plot they used with the other two movies except this time they pretend to be cowboys for two hours and nothing fun, funny, or exciting happens. The effects, acting, and plot are still terrible and they still break their own time travel rules constantly. It was bad enough that they expected me to believe that MJF was in high school, but here years pass and no one ever looks any older. They had all that terrible makeup they used on Lea Thopson to make her look fat, but they don't bother to age their characters? I guess this is the worst of the trilogy, but I didn't hate it as much as I hated the other two, this one committed a much worse sin; it's incredibly boring. In the second film, it was kind of cute that they reused the same gags and characters as the first, but at this point it's just old and lazy. The change of time frame in the first two kept things fresh, but this movie is 100% poorly executed Wild West. Part III is a disappointing conclusion that really only serves to lower expectations as it goes in hopes that you don't ask questions about the plot holes in ending.