『五(wu)十度黑(hei)』介紹(shao):邊(bian)(bian)境風云詭譎隱禍(huo)端,異心(xin)守將蠢(chun)蠢(chun)欲動陰謀分裂反叛!經疏勒城(cheng)一役,耿(geng)(geng)(geng)恭(gong)(謝苗 飾)受(shou)命攜十三將巡邊(bian)(bian)西(xi)域,途徑(jing)蒙(meng)城(cheng)附近遭匪寇劫殺,多名兄弟慘死。蒙(meng)城(cheng)主將江(jiang)(jiang)城(cheng)伍(籍(ji)翀 飾)生(sheng)叛心(xin)暗通(tong)外藩,視耿(geng)(geng)(geng)恭(gong)為眼(yan)中釘,耿(geng)(geng)(geng)恭(gong)等人陷入(ru)甕中之(zhi)鱉困境,更(geng)有與永遠之(zhi)愛人范柔神似(si)的江(jiang)(jiang)城(cheng)伍之(zhi)妹江(jiang)(jiang)月(陳(chen)夢希 飾)以(yi)美人計攪其心(xin)神,耿(geng)(geng)(geng)恭(gong)能(neng)否抵(di)住誘惑?一句“分裂國土(tu)者,有多少(shao)、滅多少(shao)”明其忠(zhong)勇之(zhi)志,但又能(neng)否憑六(liu)人之(zhi)力阻止(zhi)蒙(meng)城(cheng)之(zhi)亂,斬殺叛逆(ni)之(zhi)賊?