As long as I don't think about the hero's backstory, I liked this third book more than the other two. The elements with the conflict, setting, relationship development, and trope combination really did it for me. As a standalone, I would give it 4 stars. But, because I read book 2 and I can't HELP but think about the hero's backstory, I'm afraid it's another 3 stars. I have to stress though, I'm really happy I read this series. While I think Hernandez needs to do more before he earns a HEA, and while overall, I don't think apocalyptic romance works for me, Alyssa Cole's writing SHINES. I loved the Reluctant Royal Series and I saw a lot of the skill she put into those books in the Off the Grid series. It was still a great time, even though I got hung up on a few snags. YMMV. If it sounds interesting, if you've enjoyed other works by Alyssa Cole, you should 100% read these books.