Lara and Adam visit their grandfather again, this time with Lara's best friend Lucia. Upon arriving at their grandfather's house, Lara and Adam are desperate to show Lucia their clock but are somewhat afraid of where it might take them. They finally decide to go on another time travelling adventure which takes the trio to times involving dinosaurs, ice-age cave dwellers, bears, wolves, vikings - they even end up at the Battle of Trafalgar, before meeting a rather mysterious historical figure who isn't quite who they thought he was.