Ieyasu is already allied with Nobunaga and aids his ally by attacking the larger Asakura army at Anegawa. He then tries to attack Shingen but falls victim to the elder general's ambush. Escaping with his life, Ieyasu mourns the vassals lost for his safety. Tadakatsu assures him that they died protecting the world of peace his lord envisions, strengthening Ieyasu's resolve. Shingen and Nobunaga eventually pass away and Ieyasu becomes one of the two powerful men of the land. To settle their differences, he challenges his rival, Hideyoshi, at Komaki-Nagakute. Although he won the battle, Ieyasu thought that killing his rival would only throw the land into confusion once more. Therefore, he keeps his ambitions in check and lets Hideyoshi rule for the time. As he assists the western siege at Odawara Castle, he gains Masamune as an ally.
After Hideyoshi's passing, Ieyasu decides to set his plans into action and clashes with the Toyotomi loyalist, Mitsunari. After winning the battle of Sekigahara, Ieyasu becomes shogun and finally unites the land. Remaining Toyotomi loyalists band together to oppose him at Osaka Castle. Fearing that failure to affirm his grip would throw the land once more into chaos, he leads his army to destroy them. With the land finally at peace, Ieyasu has completed his arduous journey for unity.
His dream stage focuses on a "what if?" scenario prior to the Battle of Sekigahara. Ieyasu and Ina are unexpectedly isolated from their allies when Kanetsugu and the Uesugi army heads straight for their location. His enemies also include the Sanada army from Ueda and Yoshinobu Satake.