Would you risk the future to change the past?Greenwich, London, 1894. Luna, Konstantin and Aidan are time-travelling thieves, stealing artefacts from the future to bring progress forward. And they are about to venture on their most treacherous mission. For The Butterfly Club have their eyes on a shiny new prize.In Egypt's Valley of the Kings a man named Howard Carter will stumble upon an unimaginable treasure – Tutankhamun's mummy: the greatest archaeological discovery of all time. The three children are given an impossible task: travel to 1922 and uncover the mummy first.But when the time-thieves disturb Tutankhamun's long sleep they wake something else too – a deadly and ancient curse. And now they must face the terrifying consequences of their actions...