The main issue is grammar. I would go through the entire script and fix all of the grammatical errors first, then perhaps rewrite another version of the script with more dramatic dialogue and focus on building Sunny up, then tearing him down at the end.
There are numerous problems in every aspect of screenwriting throughout.
You begin on a VO without a character. Since the "Title appears: EQUAL" comes after the VO, there are no visuals. We'd be watching nothing, while listening to someone speak. Filmmaking is a visual medium.
From your grammar, English is not your first language. You misuse words, and your sentences are not structured properly. "we assume the class of them" is incorrect....
Kaitlynn Dawn Prescott is one week away from a wedding she had in her mind since she was 15. Every thing is set. All that’s left is her fiancé and groomsmen to fly from California, and her step father from Puerto Rico. What could go wrong? It’s Sunday, September 10, 2001.
Get up-to-date in industry knowledge, Scripts of the Month and more. By subscribing to our newsletter, you'll never miss the best stuff we have to offer.