Nobody can ever know Aria’s secret: she has human DNA.

Raised on Planet Terros, Aria was taught to hate humans and their destructive ways. Now she and her father have been sent to Ireland to release a deadly virus and end the failed human experiment. 

Aria is shocked to discover that she is herself half human, and amazed to find that Earth-dwellers live life to the full and feel love for each other, even though they are mortal. 

The mission goes wrong. Everything Aria thought she knew about Earth was a lie.

And now forces from her past are out to destroy her.