When a young boy is taken away from his father, and starts to get raped by his mother, he must find a way to escape.

I see an event described but not an entire story. It reads like an opening line or a teaser, not a logline. Also I would drop “starts to get raped” and put in “gets raped” and drop “When” and start with “A ” to tighten it up and make the action more immediate.