You,me against the world ( Cara Delevingne ) G x G

Alethea was a normal girl in highschool living in New York her mother is an architect while her father, an engineer she lived a simple life just an only child then everything changed when an unlikely invasion occurred
She was in history class when an out burst occurred (explosion)
Everyone was silent her teacher said:
"The dead has come to take the living"
Everyone started to panic
Where will she end up?..where are her parents?..

Would she even survive?
The question lie in her head