One bright morning, Precious Ramotswe - head of Botswana's No. 1 Ladies' Detective Agency - receives a visitor: a woman from Australia. This woman asks Precious to find the nursemaid who raised her during her childhood in Botswana. The woman wants to thank her for being such an important part of her life. Precious has a history of successfully solving cases, but this one proves difficult and throws up a number of surprises and challenges. Cosy crime set in Botswana.