Masayuki [Masao Kusakari] and Nobushige [Masato Sakai] part with Nobuyuki [Yo Oizumi] and head to Ueda Castle to prepare for the attack by the Tokugawa forces. On their way, they visit Numata Castle. However, Ina [Yo Yoshida] takes unexpected action against them. Meanwhile, Nobuyuki is ordered by Ieyasu [Seiyo Uchino] to spearhead the attack on Ueda. Hidetada [Gen Hoshino], together with Honda Masanobu [Masaomi Kondo], advances his troops in his first battle. Nobushige devises a plan in the hopes of repelling the Tokugawa forces while also avoiding a battle with Nobuyuki. Sasuke [Takashi Fujii] brings shocking news.
昌幸(草刈正雄)と信繁(堺雅人)は、信幸(大泉洋)と別れ、徳川勢を迎え撃つために上田城へ。途中、昌幸と信繁は沼田城に立ち寄るが、稲(吉田羊)は思いがけない行動に出る。一方、信幸は家康(内野聖陽)から上田攻めの先ぽうを命じられる。初陣の秀忠(星野源)は本多正信(近藤正臣)とともに兵を進める。徳川勢を撃退しつつ、しかし信幸とは戦わないために信繁は一計を案じる。そして佐助(藤井隆)が衝撃の知らせを届ける。
