The five-part miniseries charts the birth of modern Ireland during one of the most tumultuous and dangerous periods in history, "Rebellion" begins with the outbreak of World War I. As expectations of a short and glorious campaign are dashed, social stability is eroded, and Irish nationalism comes to the fore. The tumultuous events that follow are seen through the eyes of three young women and their families, lovers and friends from Belfast, Dublin and London as they play vital and conflicting roles in the narrative of Ireland's independence. Some prioritize family loyalties; some are motivated by the noblest of ideals, some by opportunism; others take up arms, prepared to sacrifice everything for the dream of a better society and true independence.