A group of teenage schoolgirls are on a field trip to the Forest of Dean. Vain, spoilt and interested primarily in sex, alcohol and outfits, the girls squabble and smoke, skive and bitch, torment their teachers and betray their friends, and the reader bears witness to the development and disintegration of relationships. So far, so typical. But this world of teenagers is a hall of mirrors, where the everyday can become monstrous, and nothing is quite what you expect. Soon enough something dark and sinister begins to move underneath the surface.