Toyotomi Hideyoshi is on the verge of uniting the country, and all that stands between him and victory is the Odawara Castle, which is guarded by the "Lion of Sagami," Ujiyasu Houjou. Hideyoshi's personally trained generals—Ishida Mitsunari, Katou Kiyomasa, and Fukushima Masanori—along with Ootani Yoshitsugu, Shima Sakon, and Naoe Kanetsugu—are all fighting on the front lines. The two young warriors of the Sanada family, older brother Nobuyuki and younger brother Yukimura, are positioned among the combat formation. Sanada Yukimura comes into the conflict on a lone horse as the deadlock begins to break down. His brother immediately follows him.