An introduction needs to include a hook, specific information about what you are writing about, and a basic preview of your arguments.
A good hook for your introduction would be to list how much money The Truman Show made during its time on the air. This is what I call a shocking statistic, which can be used to draw the reader in. What does an executive care about more than anything else? Money!
Network Executive: The sponsors are threatening to rip up their contracts!
Christof: Why? We're getting higher ratings for this graphic than we've ever had on this show. (imbd)
Next you should explain that it was a wildly popular show, and a sequel will do any better. Explain the premise of the sequel (which is up to you), and your three points. Your points should focus on how this time around you will not make the same mistakes, how the show will make more money, and the reason the show will do well.