Carpathia awaits the arrival of what could be the last transporter from Earth. Loyalties are tested as the head of Forthaven's Expeditionaries attempts to break away from the settlement, and the beginnings of a mystery which goes right to the heart of human life on Carpathia are uncovered.

Llega la noticia de la desaparición de un transbordador de supervivencia. Cass, Fleur y Jack salen del asentamiento para buscar a la hija de Stella. Julius Berger se enfrenta a Stella y Tate.

A whiteout of unprecedented strength threatens to destroy Forthaven. Stella and Tate enlist Tipper to help with the oncoming disaster. Fleur attempts to make peace with the ACs and Cass leaves the settlement on a rescue mission that no one believes he can survive.

When a rogue AC enters Forthaven and attacks a citizen, Cass and Fleur must control the situation. But Fleur soon finds herself calling into question everything Forthaven stands for and Cass must make an agonizing decision.

Una leyenda de los Cárpatos regresa a Forthaven. Cass y Fleur están en peligro. Tate se enfrenta a la creciente base de poder de Berger.

When missing expeditionary Josie Hunter walks back into the settlement, unharmed, the jubilant air quickly takes a darker tone. Josie is different, her children can't communicate with her and reports of her violent behavior circulate. Tate and Stella must find out what has changed Josie and begin to come to terms with what is really at work on the planet.