Opening plot description

Plot:

Our film is a period drama, or more particularly, a docudrama meaning that we are targeting real events that have happened. We want to tell the story of the Islandmagee witch trials and of the hardships experienced by the eight women who were involved. We want to challenge the treatment of these women by developing emotional drama.
We plan on opening our film with the appropriate indents, followed by some historical information on the witch trials. We need to be careful that our opening to a movie doesn't look like a trailer though.
We will have our protagonist running through the woods, towards some old irish ruins. She is holding a letter, the letter of her conviction. She is clearly distraught and is crying because of her given circumstances. She may never see her family again or worse!
We definitely want to establish an enigma over whether or not the women are guilty and have been practicing witch craft or wether they are totally innocent. In saying this, we also want to open on a powerful note, provoking pathos and sympathy from the audience and therefore, establishing an emotional character/audience link from very early on.

Brief:

We recently attended a cinemagic lecture on pitching a brief and on how to summarise a movie into one sentence, taking the above into consideration, I believe the best way to do this is by the following:

'A tragic tale about the misconceptions of witch craft in Ireland in the early 1700s, coupled with the questionable treatment of females throughout history.'