This is just a really neat story. It starts out a bit slow and at first seems as though it's very similar to canon, but it gradually veers off and forges a very unique path. Darcy and Elizabeth are just one of the five couples whose stories are nicely interwoven.
The book begins with Mr. Collins' arrival. All the preceding events of Pride and Prejudice have occurred. If you're a Mary Bennet fan, you will love her story arc here. She sees Mr. Collins with hope that he'll recognize she's perfect for him and is sorely disappointed when he doesn't pay any attention to her. I love that she has a surprise suitor and is the first to marry. This changes her view of herself and the rest of her family.
Although Mr. Bingley's sisters try to talk him into abandoning Jane, it's Mr. Darcy who has the strongest influence on him to stay away from Netherfield and give her up when they go to London. Interestingly, all his objections have to do with her family's embarrassing behavior and lack of important connections without any mention of Jane's heart seeming untouched by Mr. Bingley. Darcy also is eager to get away from Elizabeth, recognizing that his own heart is at risk if he stays in Hertfordshire too long.
Mr. Wickham is unaware of the entail and is under the assumption that Mrs. Bennet will inherit. He expects to be able to live comfortably at Longbourn if he marries one of the Bennet daughters. Elizabeth is the most attractive option, but Lydia proves to be a much easier mark.
Kitty has a particular favorite among the officers, too. She and Lydia begin as a flirty, silly team who, foolishly, only confide in each other when others should be made aware of their biggest secret.
The most impressive thing about this book is the way Elizabeth, Mary and Kitty gradually bond together even though they have never been particularly close in the past. Mary and Elizabeth start drifting closer together first, and then Kitty realizes perhaps her older sisters would be better to emulate than Lydia. As they cope with family crises, they demonstrate increased maturity. The plot knits tightly together, with decisions by each sister affecting the others. Mr. Darcy is a significant presence throughout the book, and his initial proposal (yes, there are two!) goes much differently than in the original.
There are places in the book where the author over-explains. Many things that are evident to the reader are spoon-fed, so the writing sometimes has a somewhat juvenile quality. There are also a number of small editing-type errors. However, it's a solid story that's mostly told well.