I bought this book mostly out of boredom and wanting to read something related to Stargate and I was not disappointed. The story is intriguing, the character development wasn't bad, pretty good for Shepard and his team but the other characters weren't really expanded upon much. I was hoping the story would add a a bit to the Atlantis universe, which it didn't really do much.
The story is set on a planet called Khost, which is going through what appears to be an Ice Age. Later on the team discover the truth about the climate of the planet and that it's going through something much worse than an Ice Age. The people of the planet are struggling to survive the weather and are being abducted by Banshees, which do get explained later on. However as I stated earlier the story doesn't add much to the universe.
The story is good, entertaining and does help to develop the characters of Shepards team. I'd recommend a read.