Tim and Pru decide that they've had enough of kicking their heels at home in Wandsworth and head off to explore one of the world's great waterways, the River Nile. At first Tim is unsure, but Pru is determined: '...all the journeys I've done with him have opened doors for me and given me new and thrilling experiences'. Travelling from Luxor to Aswan, Tim and Pru uncover the secrets of this great artery of an ancient civilisation and discover how some of the first-ever canals were used to build the temple at Karnak. They also visit a Nubian village; purchase aphrodisiacs in the souk; and dance by moonlight.