In this the first episode, Dara Ó Briain - comedian, amateur astronomer and confirmed sceptic - embarks on a journey to explore the mysteries of the world's pyramids. With the Royal Pyramids of Egypt as a backdrop, Dara, assisted by Egyptologist Chris Naunton and archaeologist Raksha Dave, delves into the fundamental questions: Why and how were these pyramids built? How did they come to be?