It stars Natalie Portman and Scarlett Johansson as Anne and Mary Boleyn, the nieces of a very ambitious and conniving Duke. Henry is played by Eric Bana and it is a young, fit Henry that we see, not the image of Henry normally portrayed.
I frankly had never heard of Mary Boleyn, who if the film is at all accurate, may have borne Henry's only living, albeit illegitimate, son. The film is told mostly from Mary's point of view.
Sister Anne's claims to fame are three: Henry so wanted to marry her that he broke England's bonds with the Roman Catholic church and created the Church of England, she was mother to Queen Elizabeth I, and she was the first queen to be executed - for supposed adultery. Those are substantial accomplishments, although perhaps she would have rather skipped the third.
While an Anglophile, I didn't expect to enjoy the film. I was pleasantly surprised.