Ivy Moss and her dearest friends, Cessie and Aero, are interns when they are plucked from thousands to battle for time travel odysseys. With superbugs striking folk down, the race is on to discover a cure. Oppressed by her co-engineers, wily, bullet-headed Ivy is seeking an escape - the beastly domain of the dinosaurs, theatrical society of Shakespeare and rebellious world of the suffragists prove too irresistible to bypass. Can Ivy outperform inscrutable bully. Magnus, ruthless reporter, Aurora, and long-suffering Bo to secure her ticket to eras beyond the abyss? If she does, will she and her friends sidestep the jaws of the human-chomping T-Rex, the axe-wielding tempers of the Tudors and the anti-suffragist gangs who stalk the textbooks? 23 will transport you to impossible landscapes, colourful characters and mesmeric mysteries. In the attempt to win it all, will Ivy lose sight of what - and who - matter most?