What do the dead do when they can't leave ...and don't know why? The afterlife doesn't come with a manual.

In fact, Hart and Bowler (two ordinary but dead men) have had to work out the rules of their new existence for themselves. It's that fact (along with being unable to leave the boundaries of their city centre, unable to communicate with the other lost souls, unable to rest in case The Beast catches up with them) that makes getting out of their situation a priority.

But Hart and Bowler don't know why they're there in the first place; if they ever want to leave, they will have to find all the answers to be able to understand the physics of the dead.

What are the strange, glowing objects that pass across the sky? Who are the living people surrounded by a blue glow? What are their physical limitations in that place, and have they fully explored the possibilities of what they can do?

Time is running out. Their afterlife was never supposed to be this way, and if they don't make it out soon, they're destined to end up like the others. Insane, and alone forever...