I saw this last night. Just keep watching. As in all Jane Austen novels, patience will be rewarded.
The trailers try to make this out to be a zombie movie with strange Regency characters incidentally borrowed from Pride and Prejudice. In truth, it’s one of the best P&P adaptations ever made (no joke) and just happens to be set in a Regency under siege by the undead. Young women are placed on the marriage market, just as they are in Austen, but in addition to music, French, drawing, and dancing, one of their principal accomplishments must be combat.
The intermixing of Austen’s story and the zombie apocalypse is surprisingly skillful and extremely funny. Everything from the book is here — the Darcy/Elizabeth relationship, the Bennet/Collins entailment problem, the Wickham/Lydia elopement — the whole thing. The plot even manages to emphasize the class/money conflict so important to Austen, except that it’s adapted for the zombie problem. The Bennet sisters are in a precarious middle-class economic situation owing to the entailment of their father’s estate. Therefore, their father can only afford to send them to China for combat training as opposed to Japan, where the aristocracy goes. This is partly the basis for Mr. Darcy and Caroline Bingley’s contempt for the Bennet family. Other plot alterations relate to the zombie problem and are so ingeniously blended into the original story that you just go with it.
If you haven’t seen this, prioritize it on your Netflix list. If at all possible, read the novel first.