The apocalypse has left the world barren and broken. Most of humanity has succumbed to the toxic fumes throughout the atmosphere, and the sky is shrouded in dark mist. Samuel and Sarah are two survivors, struggling to stay alive in an unforgiving world. Their survival relies on Sarah's ingenious gadgets, but when she goes missing, Sam begins a journey in order to rescue her and discover the truth about the past, armed only with a lantern that Sarah left behind, and the advice of the scientist Doctor Williams.

The apocalypse has left the world barren and broken. Most of humanity has succumbed to the toxic fumes throughout the atmosphere, and the sky is shrouded in dark mist. Samuel and Sarah are two survivors, struggling to stay alive in an unforgiving world. Their survival relies on Sarah's ingenious gadgets, but when she goes missing, Sam begins a journey in order to rescue her and discover the truth about the past, armed only with a lantern that Sarah left behind, and the advice of the scientist Doctor Williams.