At 28 years of age, Charlie Carroll finds himself teaching English to nice children in a nice school. It's the perfect job - so why is he so bored? Determined to find out why a staggering 50% of British teachers quit within five years of qualifying, he gives up his safe, steady life, buys a rusty old VW camper and spends the next year on the road, travelling around the country's most deprived areas and teaching problem students in Britain's toughest schools. While he fears for his safety, Charlie finds glimmers of optimism in the worst of areas.