For most twelve-year-olds the prospect of joining a new school is pretty daunting, but for Sam Bentley it's terrifying.

Sam finds himself in 2015 by accident; having travelled in time from a future that has been devastated by the Great Surge, a weather event so vast that it wiped out eighty percent of the world's population in just twenty-four hours.

Will Sam be able to convince everyone that he's a time traveller?

What will he do when he comes face to face with the man responsible for the collapse of civilization as we know it?