The Enlightening picks up right on the heels of where The Tempering ended. Mackenzie is on the run with Geoff and Liam (the perfect love triangle). Now normally I'm not a huge fan of the triangle - but in this case all parties know what is going on - no one is hiding their feelings for each other, so it didn't really bother me. While this is one of the driving points it is not the only one. The main purpose of their journey is to find a place where they can live peacefully, and warn every pack they come across about Margaret's plans.
Sometimes their plan works well and other times it lands them in heaps of trouble. I like how Adrianne James balanced the good packs against the bad packs, and even within each pack themselves at times. Each one had their own little min-society with its own rules and guidelines and traditions. As the trio pack hops, a lot is revealed and I can't give away too much of the story. They run into old friends and people they thought lost with several very touching reuinions.
All three characters grow and change - both mentally and in their werewolf abilities. I don't think a single one left the story the same person as when the entered. I found this book to be much more of an adventure than book one which seemed to be more story and world building. It does end in a bit of a cliffhanger - I was really super pissed at one of the guys - you'll know exactly who I mean once you read it.