In every corner of the UK, women are being kept as slaves and sold for sex. Many are trafficked into the country from Romania. With police struggling to stop this brutal business, Jean Mackenzie heads on a journey into Romania's underworld to expose how it all begins. It's a world where traffickers have learnt to game the system; where when children vanish, their disappearances are ignored. As Jean meets the girls being bought and sold, she uncovers the shocking secrets of this ruthless trade. Have the traffickers created an unstoppable crime?