London, 1558: Queen Mary is dead, and twenty-five-year-old Elizabeth ascends the throne. Summoned to court from exile abroad, Elizabeth's intimate spy, Brendan Prescott, is reunited with the young queen, as well as his beloved Kate, scheming William Cecil, and archrival, Robert Dudley. A poison attempt on Elizabeth soon overshadows her coronation, but before Brendan can investigate, Elizabeth summons him in private to dispatch him on a far more confidential mission.