明熹宗天啟年間,宦官魏(wei)(wei)忠(zhong)賢(xian)培植(zhi)親信意圖不軌,都(dou)察院左都(dou)御史楊(yang)漣(lian)(lian)在一個秋雨連(lian)綿之夜,得到神秘訪客提(ti)供(gong)的(de)信件和賬冊(ce),其中羅列了魏(wei)(wei)忠(zhong)賢(xian)禍國殃民的(de)罪證,楊(yang)漣(lian)(lian)以此信彈劾魏(wei)(wei)忠(zhong)賢(xian)。不想卻誤中圈套,被打入天牢......