The race for the thirty-nine keys continues, and new challenges await 14-year-old Amy and her little brother Dan. Having survived the difficult loss of their only friend and another betrayal by the treacherous uncle Alistair, they follow in the footsteps of Winston Churchill and Chucky Zulu to Africa in search of the next key. But along with the new key, they will also have to learn the terrible truth about which clan their parents and themselves belonged to.