This film is based on a true story. It is a disturbing portrayal of a secret world that is all around us. Ai Qin, a young Chinese girl from Fujian, China, borrows $25,000 to pay Snakeheads to smuggle her into the UK illegally so she can support her son and family back in China. Once in the UK she becomes another one of 3 million migrant workers that are the bedrock of its food supply chain, construction and hospitality industries. She lives with eleven other Chinese in a two-bedroom suburban house. With illegally forged work permits, they work in factories preparing food for British supermarkets. In their search for better paying jobs to repay their debts they end up cockling in Morecambe Bay at night. On February 5th 2004 twenty three Chinese drowned in Morecambe, their families in China are still paying off their debts.