What you will find in Epic Fail is a fun twist on the setting and character roles. The story is straight forward-- obviously. There really isn't much that would be considered a surprise if you're already familiar with the classic. The one twist I thought was clever as making Ms. Bennet the principal of the sisters' high school. That really allowed for her to play up the annoying, busy-body role.
One thing worth noting is that the classic Elizabeth Bennet didn't come across as strong in the retelling. We all know Elizabeth in Pride and Prejudice. She was a cut above the rest. But in Epic Fail she seems to blend in with the cliche of girls caught gawking at a pretty face. Oh well. It was still a fun read.