When a young girl, Ai Qin, pays $25,000 to be smuggled into the UK in order to support her family back in China, she becomes another one of 3 million migrant workers that have become the bedrock of our economy. Forced to live with eleven other Chinese people in a two bedroom house, they work in factories preparing food for British supermarkets. Risking their lives for pennies these unprotected workers end up cockling in Morcombe Bay at night.

Patagonia narrates the journeys of two women - one looking for her past, the other for her future. The film inter-cuts between their stories, in which one of them travels south to north through the Welsh springtime and the other east to west through the Argentine autumn.