Escorting "nine days queen" Jane Grey into imprisonment is Elizabeth Tilney. It won't be for long: everyone knows Jane will go free as soon as the victorious new queen is crowned. Which is a good thing because the two 16-year-olds, cooped up together in a room in the Gentleman Gaoler's house, couldn't be less compatible. They are united though by their disdain for the 17-year-old to whom Jane has recently been married off: petulant Guildford Dudley, held prisoner in a neighbouring tower. The two girls learn to live with each other, but Elizabeth finds herself drawn into the difficult relationship between the newlyweds. And when events take an unexpected and dangerous direction, her newfound loyalties are put to the test.