'The Ganges is the river of India. It rises in an ice cave in the Himalayas, held sacred by the Hindus. It is like being born in a monastery. It dies in the Indian Ocean, after a journey of 1,540 miles. Over the years it has become not only a river but a way of life.' Film-maker Yavar Abbas returns after years in the West to the country of his birth, and follows the Ganges from its source to the sea.