New York City, 2141: Yojana Patel throws herself off a skyscraper, but never hits the ground. Cornwall, 1640: gentle young Dora Predennick, newly come to Sweetclover Hall to work, discovers a badly-burnt woman at the bottom of a flight of stairs. When she reaches out to comfort the dying woman, she's knocked unconscious, only to wake, centuries later, in empty laboratory room. On a rainy night in present-day Cornwall, seventeen-year-old Kaz Cecka sneaks into the long-abandoned Sweetclover Hall, determined to secure a dry place to sleep. Instead he finds a frightened housemaid who believes Charles I is king and an angry girl who claims to come from the future. Thrust into the centre of an adventure that spans millennia, Dora, Kaz and Jana must learn to harness powers they barely understand to escape not only villainous Lord Sweetclover but the forces of a fanatical army ... all the while staying one step ahead of a mysterious woman known only as Quil.