Invaded is the second book of the Alienated series. Cara is living in L'eihr and Aelyx is on Earth. Both are struggling to adapt to their new homes. However, there is trouble. Aelyx is constantly in danger of being assassinated and is struggling to keep the peace between Earth and L'eihr. On L'eihr, someone is out to frame Cara for crimes she did not commit. Cara has also noticed that the leaders of L'eihr are not being entirely honest about why they want an alliance with Earth.