A string of sad songs tells the historical prophecy of Spider City. During the warring States period, Spider City, surrounded by dense forests, had a complex terrain, and when the enemy attacked here, it was bound to get lost, so the city master sat firmly on the city tower, if the command was fixed, and there were generals on all sides to defend the enemy, which could keep the city intact. General Jiujin Tushi (Mifune Toshiro Toshiro Mifune) and Deputy General Miki are ready to return to the city to receive the reward because of their ability to counter the rebellion. On the way, the two walked into the depths of the dense forest and came across a white-haired old woman playing the piano and singing. They felt that the matter was strange and suspected that the enemy had planted suspicions, so they came forward to force them to submit. But this man predicted that Jiujin would take the throne of the city, and the son of Miki would inherit the great unification. Just when the two people were skeptical, the man disappeared into a white light. After that, when he returned to the city, Jiujin became the master of the north city, but when he thought of the prophecy, he was unwilling, so, egged on by his wife Asumao, he killed the king and established himself as the master of the spider nest city, but this was only the beginning of the prophecy.