What is Diwali? For many it's like Christmas and New Year rolled into one day in October-November. But few non-Hindus might know that Diwali is in fact the third day in a festival that lasts no less than five days. This documentary features a cast of British Hindus, including a family, priests, theologians, artists, entrepreneurs, and The One Show's Anita Rani, who day by day reveal the meaning of each ritual and custom. Colourful original illustrations of iconic stories from the Hindu scriptures show how each day is a celebration of a distinct spiritual and moral message designed to help every Hindu cast off their secular baggage and replenish their inner spiritual light.