Fiona has no time today, not even to go to the bathroom. She is in a big hurry to show off the volcano she and Felix made for show-and-tell. Just as the volcano erupts... oops!

Rachel, a rookie cop, is about to begin her first nightshift in a neglected police station in a Scottish, backwater town. The kind of place where the tide has gone out and stranded a motley bunch of the aimless, the forgotten, the bitter-and-twisted who all think that, really, they deserve to be somewhere else. They all think they're there by accident and that, with a little luck, life is going to get better. Wrong, on both counts. Six is about to...