Arianna is an average young woman with a secret. Every night she dreams of Cassis a man living in a parallel world and battling the monsters of an apocalypse. Through the patron system she can communicate with him and support him. For ten years she watched him be a lone warrior in a destroyed world. After their latests big fight Arianna is hit by a car ... and finds herself in Cassis's world at the start of the apocalypse ten years ago.  Follow Arianna and Cassis as they try to survive the apocalypse again, this time together. They have to make different choices to save the world and maybe find a way for Arianna to go back home.