In 1570, Toyotomi Hideyoshi meets a bold temple acolyte named Sakichi and invites him into his service. The young man grows into Ishida Mitsunari, gaining wealth, lands, and prestige within his master’s orbit. Hideyoshi unifies most of Japan and rises to the title of taikō, yet his later years are marked by ambitious, often costly campaigns that sap resources and strain loyalties. The invasion of Korea proves expensive and draining, and defeats along the way leave many vassals close to bankruptcy. In a sweeping arc of power, Hideyoshi’s grip on the realm tightens, even as his health and judgment falter.
By 1595, after conceiving a son, Hideyori, Hideyoshi decrees the execution of his designated heir and his entire family on a pretext of treason, aiming to secure a new lineage for the throne. Mitsunari pleads for mercy, but his pleas fail to move his aging master. In the ensuing chaos, the maids of one condemned woman strike Ishida and his men, and Mitsunari is moved by the loyalty he witnesses. He spares the attackers and recruits Hatsume, a cunning spy, to serve him as an informant. Hatsume’s intelligence becomes a crucial thread in Mitsunari’s unfolding schemеs, even as she navigates dangers from competing networks.
Mitsunari’s path crosses with Shima Sakon, a ronin once held in high esteem, now wary of Toyotomi’s power. Mitsunari offers Sakon half of his earnings if he’ll join as a samurai, but Sakon initially declines, detesting the current regime. During a dinner with Sakon and his wife Hanano, Mitsunari presses his case, and Sakon is eventually swayed to ally with him, in the hope that, after Toyotomi’s death, they can shepherd a fairer governance for Toyotomi’s son. Hanano, Noriko Nakagoshi, witnesses the shift in his resolve and becomes part of the web of loyalties that shape the coming conflict.
As Hideyoshi’s health declines, Mitsunari and his longtime ally Otani Yoshitsugu, Tasuku Nagaoka, grow wary that Tokugawa Ieyasu, the wealthiest lord in the realm, will seize power after the ruler’s death. Koji Yakusho embodies Ieyasu, whose plotting with his vassals—Honda Tadakatsu and Ii Naomasa—aims to secure a Regency Council that could override Mitsunari’s influence. Tokugawa also wins the support of the Seven Spears of Shizugatake, bolstering his position with a force ready to challenge Mitsunari.
Hatsume continues to feed Mitsunari information through bribes and covert channels, even as the White Snake, a formidable spymaster, tries to blunt their intelligence network. The web of espionage deepens as the court becomes a chessboard where every move could tilt the balance of power.
In 1598, Hideyoshi dies, and Mitsunari orders the death to be concealed until the Korean campaign ends, to avoid upheaval during the retreat. When the truth surfaces, Tokugawa uses the revelation to frame Mitsunari as someone who intends to seize control of the Regency Council. Tokugawa’s plotting reaches a fever pitch as he provokes the Seven Spears to file formal complaints against Mitsunari, claiming insubordination and a bid for supremacy. Mitsunari counters by pressing a rival complaint of his own, seeking to block Tokugawa’s advance. A temporary, fragile truce is brokered by Maeda Toshiie, a respected organizer who treads a careful line between both sides, but his death shifts the balance and intensifies the conflict once more. Tokuma Nishioka portrays Maeda’s weight in the decision, though the moment is fleeting and the standoff resumes its deadly course.
Maeda’s demise only hardens the struggle. The Seven Spears plot to assassinate Mitsunari, forcing him to retreat to his castle at Sawayama. Before departing, Mitsunari confesses his love for Hatsume, but acknowledges he cannot be with her due to obligations and duty. Hatsume, driven by loyalty, is captured and sold into slavery as the winds of war turn ever harsher. Mitsunari forges a delicate alliance with Uesugi Kagekatsu, Akiyoshi Tsujimoto, to oppose Tokugawa, and their combined forces push toward Sekigahara.
Uesugi’s army advances into Tokugawa’s home province, pulling Tokugawa’s forces into a broader confrontation. Meanwhile, the Hosokawa family confronts a devastating crisis when hostages are taken, their home set ablaze, and the family chooses suicide over capture; the tragedy leaves Mitsunari morally unsettled and underscores the human cost of the power struggle. Haruo Sekiguchi’s Tadaoki Hosokawa is among the witnesses to this grim moment.
As the year turns, Hatsume makes her way toward Sekigahara, carrying crucial intelligence as Mitsunari and Tokugawa prepare for the decisive clash. The day arrives on October 21, 1600, and Sekigahara erupts into a monumental confrontation. Sakon leads a small elite force against Tokugawa’s vanguard, and a ninja’s attempt to assassinate Tokugawa is thwarted by fate and the White Snake’s rival craft. In the climactic turn, Kobayakawa Hideaki, enticed or pressured by Tokugawa’s emissaries, betrays Mitsunari. Kobayakawa’s troops pivot against Mitsunari’s army, Otani Yoshitsugu is killed, and Mitsunari’s lines crumble into chaos. Mitsunari flees the battlefield, ultimately surrendering to Tokugawa’s troops. He is imprisoned and visited by a grief-stricken Kobayakawa, who regrets his betrayal and urges Mitsunari to survive.
The day before his execution, Tokugawa meets Mitsunari in silence. As they pass, Hatsume reappears, her loyalty undiminished, and she mouths the clan motto to him: “If one gives oneself for all, the world will prosper.”
> If one gives oneself for all, the world will prosper
