The house holds a celebration of the centenary of the exhibition that discovered the tomb of Tutankhamen, led by the great-grandfather of the current Lord Carnarvon. Lady Carnarvon is writing a book about her husband's famous ancestor, while housekeepers Sheena and Jason are cleaning the Egyptian museum in the basement. Once the domain of the maids and footmen, it now houses replicas from the tomb of Tutankhamen and is a treasure trove that requires them to use special cleaning techniques.