Set in Japan in the year 1600, at the dawn of a century-defining civil war, Lord Yoshii Toranaga is fighting for his life as his enemies on the Council of Regents unite against him, when a mysterious European ship is found marooned in a nearby fishing village. Its English pilot, John Blackthorne, comes bearing secrets that could help Toranaga tip the scales of power and devastate the formidable influence of Blackthorne’s own enemies — the Jesuit priests and Portuguese merchants. Toranaga’s and Blackthorne’s fates become inextricably tied to their translator, Toda Mariko, a mysterious Christian noblewoman and the last of a disgraced line. While serving her lord amidst this fraught political landscape, Mariko must reconcile her newfound companionship with Blackthorne, her commitment to the faith that saved her and her duty to her late father.