One misty morning, Liz Dunn stumbles down the road to her school and
screams for help. A police psychologist gets her to reveal her story: A month
earlier: three rebellious teenagers - Mike, Frankie and Geoff are trying to
ditch
the school field trip to Wales. The school nerd Martin helps them out by
allowing them to stay in an old war bunker for the three days on the condition
that his friend Liz joins them. The teens go down, party and have great fun
but Martin doesn't return to let them out and they hope and pray that
someone will find them...