Yes, Kickstarter donations aren't generally tax deductible. But these donations are going to a non-profit theater company, a 501(c)3, that is the company producing this movie.
So, what sets this apart.
Nell Rothbard is one of the smartest people in the world and mildly psychic. She wakes up one morning to find a mysterious benefactor (who the audience will know is the Doctor) leaves her a note on her nightstand asking her to take care of a small problem for her, that he's busy and supposed to be dead, and would she take care of it or the Earth is doomed. The threat is a psychic alien who is intent on taking over the world by taking over peoples minds.
During the course of the adventure she discovers that her parents are actually political refugees from the future, that her mother (deceased) was genetically engineered to have a superior brain and that is where she inherited both her intelligence and her psychic aptitude. They moved to the Antelope Valley because it is a Null Zone, a place where nothing interesting is supposed to happen.
Since this is non-profit (seriously, I'm not planning on making a dime and have already spent more than the final $1k on this out of personal funds) I'm using the fan-fiction exception to copyright law. Unlike those bastards at Fox, the BBC is generally fairly tolerant of fanfic.