Utterly ignoring Hideyoshi's will, Ieyasu strengthens his influence. Mitsunari [Koji Yamamoto] decides to raid the Tokugawa residence in the Fushimi Castle town in order to take the life of Ieyasu. However, the assassination plot is leaked to Honda Masanobu [Masaomi Kondo], who raises the alarm and calls out to the daimyos to come to the protection of the residence. In this way, Masanobu tests the daimyos to see whether they will support the Tokugawa family. The odds are suddenly against Mitsunari. In a bid to help Mitsunari, Nobushige [Masato Sakai] visits Masayuki [Masao Kusakari] and makes an outlandish proposal.
秀吉の遺言をことごとく無視し、自らの影響力を強めていく家康(内野聖陽)。三成(山本耕史)は家康を討つため伏見城下の徳川屋敷を急襲することを決意するが、暗殺計画は本多正信(近藤正臣)に漏れてしまう。正信は諸大名に危機を訴え屋敷の守備に駆けつけるよう呼びかけ、徳川につくかどうかを試す。一気に形勢不利となった三成を救うため、信繁(堺雅人)は、昌幸(草刈正雄)のもとを訪ね、思いもよらぬ提案を行う。
