The only part of slavery that has been abolished is its name, says the Anti-Slavery Society, 150 years old this month. They draw attention to the plight of the 200 million people who still live in conditions of slavery, including bonded labourers, child workers and tribal peoples. In this film, Dennis Waterman takes a voyage of discovery through the seas of misery, and charts the West's responsibility for them. He concludes that nothing has changed since Jean-Jacques Rousseau wrote: 'Man was born free, and he is everywhere in chains.'