Kiyomori receives secret information that the cloistered Emperor Go-Shirakawa and his aides, including Narichika and Saiko, are plotting to overthrow the Taira family. Kiyomori bursts in anger and captures Saiko to extort a confession out of him. Saiko, however, outrages Kiyomori by saying things that rub Kiyomori the wrong way, and Kiyomori orders for the execution of Saiko. Narichika is also captured and killed off by Kiyomori, despite Shigemori's desperate plea for Narichika's life. Witnessing Kiyomori's mercilessness to those who stand in the way, Shigemori becomes fearful of Kiyomori.
鹿ヶ谷の陰謀後編！後白河院（松田翔太）が着々と進める企てに、清盛（松山ケンイチ）は陥れられそうになるが、間一髪のところで多田行綱（野仲イサオ）から密告を受ける。成親（吉沢悠）と西光（加藤虎ノ介）を捕らえた清盛が次に出た行動とは？一方伊豆では、平家側の山木に嫁ぐ直前に政子（杏）は頼朝（岡田将生）のもとに走り、「源氏の魂を忘れるな」と説く。政子の愛情は、ついに頼朝に届くのか？
