The destination of the new Second Unit is Fushimi, Kyoto, year 1866. The Time Retrograde Army is attempting to attack Ryoma Sakamoto, the key person who formed the Satcho Alliance, thus interfering with the Teradaya Incident. The Second Unit must try to stop the Time Retrograde Army by following Mutsunokami’s plans. However, even though Mutsunokami purposely avoids contact with his former master, he ends up having to save Ryoma in his time of peril. Facing his former master troubles Mutsunokami with an internal struggle… (thetvdb.com)