This book is third in the chapter book series starring the protagonist of McCall Smith's adult series, the No. 1 Ladies' Detective Agency. In this installment, Precious is invited to visit her Aunty Bee who lives at the top of Botswana and works at a safari camp because something exciting is going to happen there. It would be an expensive trip, and Precious' father is not sure he can afford a bus ticket, but he finds a way for Precious to travel with a cattle buyer he knows. When the fan belt breaks Precious has an idea to help.