The book thoroughly examines Parnell's life in two main parts: his passionate, lifelong love affair with Mary Ann Smith, a relationship that provided profound personal suffering and perhaps even inspired some of his political actions, and his political journey. It covers his early radicalism, his formation of the Irish Nationalist Party and later the Irish Parliamentary Party, his strategy of 'fighting despots, not God,' his attempts to secure Home Rule for Ireland despite fierce opposition from both unionists and the British government, and his eventual downfall. The narrative emphasizes the profound impact of the personal tragedy on his political persona and legacy, presenting a nuanced view of a figure who achieved significant political influence but whose personal conduct became a major point of contention.