At the end of the 16th century, Japan was in the white-hot period of the Warring States Period. The demon king Oda Nobunaga (played by Yoshida Kotaro) gathered his army and attacked the Takeda territory, which had long lost the Tiger of Kai. The Takeda family is no longer as glorious as it once was, and now it is surrounded by several powerful people, including Oda Nobunaga, Uesugi Kagekatsu (played by Endo Kenichi), Hojo Ujimasa (played by Takashima Masanobu), and Tokugawa Ieyasu (played by Uchino Masahiro), and is on the verge of destruction. Under the overturned nest, there will be no eggs that are intact. In order to protect the Sanada family, Sanada Masayuki (played by Kusakari Masao), who is attached to the Takeda family, uses various strategies to maneuver and turn the tide, and cleverly deals with various heroes. In this eventful time, Masayuki's two sons Gen Saburo (played by Oizumi Yo) and Gen Jiro (played by Sakai Masato) witnessed and participated in various important events of the turbulent times. Especially Gen Jiro, he grew up rapidly under the training of his father and brother. In the near future, he will leave a strong mark on the battlefield at the end of the Warring States Period under the name "Sanada Yukimura"...