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Margo is on a train to a new boarding school when she slips into another dimension, passing from a 24-hour day to one that begins and ends in just six hours. From a travelling salesman on the train, by the name of Moon, she learns that New Davia is part of a world scarred by uprisings, travel bans and world sealings. Power is determined by time – who has it, and who has the freedom to travel between time zones.
Can Margo find a way to get back home – or will she choose to stay in a world where her teenagehood is slipping away faster than ever, but where she may have found the only person with whom she would choose to spend eternity?