The world is ending.
The governments of the world have all fallen apart, the power grid is down, the cell towers aren't functioning anymore, and the cities have been all but emptied out. Slowly but surely, a deadly infection spreads across the land, destroying the landscape, attaching to anyone who comes into contact with it, tearing them apart from the inside and turning them into hosts who spread it further.
However, Judah and Birch, two survivors who find each other through the whims of fate, don't really care. Not much point in doing so, after all - the two are stuck on the top floor of a skyscraper, unable to leave the building due to the infection congregating in its lower floors.
And so, with nothing better to do, they spend their days passing the time by chatting, sleeping, working out, and tuning in to a daily radio program hosted by a fellow survivor.
Of course, the ending of this story has already been decided. Sooner or later, the infection will come to end it all. But until then?
They've got all the time in the world.