Seven writers have fled to Mirror House, a picturesque mansion by the sea. Each member of the group is running from a premonition of their own death on July 24. What they didn’t know is they were, in fact, prophesizing the end of the world, for on that very day billions will die from a relentless heatwave triggered by global warming.

The unnaturally cold subbasement passageways should have been their salvation from the lethal heatwave, but instead their sanctuary has turned into a deathtrap. They cannot stay and they cannot leave.

But is it possible this strange house is giving them the opportunity to do the unthinkable? Is the answer to stopping the apocalypse hidden within the very walls of the house that is trying to kill them?