一个年轻人听到一个电话,告诉他一场核战争已经开始,导弹将在70分钟内击中他的城市。。Sophia, a smart but quiet high schooler, strikes up a friendship with a new girl in class, but the girl begins to disrupt the lives of Sophia and her family. Sophia is then forced to uncover her friend's past and learn the truth before it's too late.。