To four girls who have nothing, their friendship is everything: they are each other’s confidants, teachers and family. The girls are all named Guinevere --- Vere, Gwen, Ginny and Win --- and it is the surprise of finding another Guinevere in their midst that first brings them together. They come to The Sisters of the Supreme Adoration convent by different paths, each with her own complicated, heartbreaking story that she safeguards. However, the girls are more than the sum of their parts, and together they form the all-powerful and confident The Guineveres, bound by the extraordinary coincidence of their names and girded against the indignities of their plain, sequestered lives.