Six aliens survive. They're hiding on Earth, waiting to develop their powers so they can fight the Mogadorians, who have destroyed their planet and are now hunting for them. 15 year old John has been hiding for years, moving from town to town, keeping a low profile with his "father." Don't expect great literature or much character development in this series. It's popular because of the non-stop action! Consider it the People magazine of middle school literature, and share it with fans of graphic novels like Amulet or Bone.