The Uesugi army, led by Naoe Kanetsugu and Uesugi Kagekatsu arrive to Sado island, despite being aware that . They meet with the head of one of Honma clans, Honma Takatsuna of the Kawarada-Honma clan that rules over northern Sado. He seems to cooperate with the Uesugi army, but once they try to commence a battle with the other Honma clan, the Uesugi army realizes just how dangerous the two feuding families might be... especially together. However, Kanetsugu has something up his sleeve as well... (thetvdb.com)