This is a fast paced book with lots of spice.  It is the equivalent of the pulp sci Fi of the 50s except it's written for women.  There is adventure on an alien planet and there is a huge Deus ex machina in the middle of the book so that the story can wrap up quickly without a lot of mystery.  

It's an enjoyable and fast rollicking read.  Perfect for when you just want a sexy adventure story and don't want to think too hard about it