Why?

Aria was a simple teenager. She was just getting into her junior year when the US was attacked. The Russians were trying to take over the US. They were planning to rid the country of Americans. Aria is separated from her family when soldiers come and take her and her family into custody. She is left only with her 8 year old sister Katy. She knows that if they don't escape they'll be murdered along with all the other people in America and all she can say is: why? Why us? Why now? Why? Along the way she realizes her and her sister are not the only ones trying to escape........