For Hindus, the Ganges is a sacred river and a place of pilgrimage, a deep influence on their religion and culture as well as being their lifeblood. Over the course of three episodes, the series is presented as a journey from the source of the river in the high Himalaya to its delta at the Bay of Bengal. A variety of animals and habitats are to be found along the river’s 1,557 mile reach, the documentary also feature the cultures, traditions and religions of the very large human population that it supports.