After a climate disaster resets the world to a pre-electronic age, a thick, impenetrable cloud layer renders the surface inaccessible. Alex, his Uncle James and their elderly cat Gaspode, live in peaceful isolation atop a hill in an observatory turned farmstead, their days marked only by tending livestock and avoiding the sun’s harsh glare. With no way to know if anything remains beyond the sea of clouds, they have long accepted that they might be the last people left alive.
But everything changes the day an airship emerges from the mist.