Los Angeles, Californie.
Une ville immense, bruyante, vivante. Lycées bondés, fêtes, plages, réseaux sociaux, dramas adolescents. Pour Calypso, Aria et Jackson, la vie tourne autour du lycée, des amis, des rires et des petits conflits du quotidien.
Mais tout bascule un vendredi après-midi, juste après la dernière sonnerie de cours.
Sans prévenir, une panne massive touche toute la ville : plus d'électricité, plus de réseau, plus d'internet. Les élèves pensent d'abord à une simple coupure... jusqu'à ce que des sirènes hurlent, que des avions s'écrasent au loin, et que des messages d'alerte incomplets parlent d'une menace biologique incontrôlable.
En quelques heures, Los Angeles sombre dans le chaos.
Emilia Morelli's world shatters when she's told her mother has died. Left with no family, well at least none that she knows of, she's pulled into a system that sees her as just another case. She's alone and unsure of herself.
But far away, there are men who have been searching for her. Men who share her name. Men who are feared by the world.
They've spent years looking for the little girl who was taken from them. Now that they've found her, they'll stop at nothing to bring her home.
Emilia doesn't know them. She doesn't know the truth.
And she has no idea that her life is about to change forever.