Sir Richard Francis Burton, officer and adventurer John Henning Speke, famed missionary David Livingstone, American journalist Morton Stanley Henning, wealthy entrepreneur Samuel Baker and his wife Florence, and Captain James Grant, join forces to unravel the greatest geographic mystery of the Victorian era. solve them and embark on a quest for the sources of the Nile. In July 1857 they begin their expedition from Zanzibar through the undiscovered interior of Africa, to discover the secret of the Nile. A journey with many unexpected and dangerous situations.