『999影(ying)院』介紹(shao):故事發生(sheng)在(zai)抗日戰爭如火(huo)如荼的關鍵階段,汪偽政(zheng)府投敵叛國,華(hua)夏大地民不聊生(sheng),炎黃子孫的命運危在(zai)旦夕。上海(hai)明(ming)氏(shi)企業的董(dong)事長明(ming)鏡(jing)(劉敏濤 飾)胸懷赤誠(cheng),暗中(zhong)(zhong)資助(zhu)中(zhong)(zhong)國共(gong)產(chan)黨。她的弟弟明(ming)樓(靳東(dong) 飾)則在(zai)軍統(tong)擔任特工,行(xing)蹤(zong)詭秘。姐(jie)弟倆(lia)的弟弟明(ming)臺(胡歌(ge) 飾)飽讀詩書(shu),本(ben)無心政(zheng)治,誰 知卻(que)在(zai)飛赴香港(gang)途中(zhong)(zhong)被(bei)軍統(tong)高官(guan)王天(tian)風(feng)綁(bang)架(jia)招攬。萬般無奈之下,明(ming)臺只能(neng)隱姓埋名(ming)接(jie)受培訓,并(bing)最(zui)終(zhong)成為軍統(tong)駐(zhu)上海(hai)站(zhan)的一名(ming)特工。在(zai)接(jie)下來的行(xing)動(dong)中(zhong)(zhong),他與(yu)中(zhong)(zhong)共(gong)鋤奸小組(zu)的程錦(jin)云(王樂君(jun) 飾)多有配合,兩人(ren)在(zai)行(xing)動(dong)中(zhong)(zhong)也培養出非凡的信任與(yu)感情。