World War 1, When the Lights Went Out in Europe, Geraldine's and Michael's Story

Welcome to the next time travelling adventure for twelve-year-old Liam and his magical sister Aoife who has only been born and yet has the power to transport a person to any time period she chooses. Add in a pirate from the 1600s called Seamus, a grumpy adventurer called Phelim, and a mysterious horse called Ferdia who has a wonderful knack of always showing up at the right time and you have a story of a group who do not belong taking part in the First World War which raged between 1914 and 1918.