Here’s a good article about how to get a reader to care about your screenplay. According to the author, it mainly comes down to engaging the reader’s heart by putting the reader inside the character’s heart. Here’s an excerpt:
What that meant was not just that this character needed to be at the center of events – he already was. But the audience needed to experience what he thought, felt and wanted from inside his perspective more. It had to become an emotional journey for them. It’s not enough for them to be somewhat interested in his situation, and the mission he ended up flying on. The real goal is for them to care – to relate to this human being and really want him to achieve the goal this story was focused on.
Sounds simple and obvious, but so many people miss it here.
I would even take it a step further, though. Not only do you have to get inside the character’s heart to engage the reader’s heart, but you have to engage the reader’s brain by having the character working toward something. There has to be a journey, a goal, a…*ahem*…plot.
Without a defined plot, the script wanders and the reader’s brain won’t flash and engage. Likewise, without a subjective take on the character, as the author of this article states, the reader’s heart won’t be pulled by your strategically-placed strings.
It’s the combination that’s so elusive, but it’s also the combination that will take a story from good to great and from shelved to sold.