For Kariuki, life in a small village in Kenya is one great adventure. The best part of his day is the walk home from school, when he is free from both his bullying headmaster and his mother's long list of chores. The landscape around his village is beautifully wild, and Kariuki knows it well. One day Kariuki meets Nigel, a boy from England who has come to visit his grandfather, the fearsome Bwana Ruin, who owns the farm where the villagers work. The...