Juliette seeks refuge in an abandoned silo after a catastrophic war, believing herself to be the sole survivor, until unsettling discoveries challenge her solitude.

High King Uther banishes his son, Arthur, who rescues a dying boy named Derfel; Arthur entrusts Derfel to Merlin and Nimue; Uther has a new heir, but Merlin receives a dark vision for the future.

Na Primeira Guerra Mundial, dois soldados tentam cruzar território inimigo para entregar uma mensagem que pode salvar centenas de soldados, inclusive o irmão de um deles.