The end of the world has come. Six teenagers have taken refuge at Cortege High, but feel unsafe as they hear the dead knocking on the doors. One bite is enough for a person to die and come back to life as a monster. Sloane Price is not particularly afraid of this. Six months ago, her world had already collapsed, and since then she had not found a single reason to cling to life. The end of the world seems like a great opportunity to say goodbye to her. While waiting for the dead to break through the barricaded doors, Sloane is forced to look at the coming apocalypse through the eyes of five teenagers who, unlike her, want to live. However, with each passing day, their desire to survive takes on increasingly frightening forms, and soon the fate of the entire group begins to depend not so much on what happens outside, but on how unpredictable and brutal the struggle for life - and death - becomes within. When everything comes to an end, what will you hold on to?