Mars is also one of the planets which is inhabited by humans now so there are no Martians on it. Then there is Europa as well which is serving as a second home for the humans. The stories basically revolve around three rebel captains who have their own motives to achieve.
The humans are seen, looking for more planets that can be inhabited. All of it does not mean that the number of enemies has decreased. There is a long list of enemies who don’t want humans to spread to all the parts of the galaxy. Get ready to see conspiracy, wars, and intergalactic traveling in one book. The journey will take the fans to the parts of the universe which they haven’t heard about.