During the Great Song era, the northern tribes rebel and the border is in crisis. The young general Li Yanrong is summoned in the kingdom’s hour of need, appointed commander, and sent to war, where he wins one glorious victory after another. Yet before the fighting has ended, dark currents stir at court. Treacherous officials hold power and slander sways the emperor. Li Shou, Minister of War and Li Yanrong’s father, is falsely accused of “colluding with the enemy and betraying the country.” The moment the imperial decree arrives, the Li family estate is brought crashing down. The family is scattered, and their former glory is swept away overnight in a storm of blood and violence.
The second son, Li Yangui, is devoted to filial duty. He takes his elderly mother to Suzhou to seek refuge with his father-in-law, Huang Zhang, only to be met with cold stares. His marriage is called off, and the family that was once bound to his by marriage turns on him in an instant, treating him like something to be cast aside. With nowhere else to turn, Li Yangui hauls and sells water to make a living and care for his mother, enduring the harshness of the world and the disdain of those around him.
His fiancée, Huang Guiying, remains loyal and secretly helps him. Their maid, Yunxiang, even risks her life to protect him. But she is ultimately murdered, and Li Yangui is framed for her death. The corrupt Suzhou prefect takes bribes and rushes through a sham trial, sentencing him to death and locking him away to await execution after the autumn harvest.
With his life hanging by a thread, the righteous warrior Ai Qian is consumed with indignation. He mounts his fiery steed and rides day and night, racing a thousand miles to carry the news to the frontier. When word reaches the border, Li Yanrong learns that his younger brother has been wronged. Enraged, he leads a million troops back to the capital, advancing on the city and striking fear into Chang’an.
At the execution ground, drums thunder and the blade hangs overhead. Li Yangui’s life is all but extinguished, with death only moments away. Just then, warhorses neigh and cavalry surges like a tide. Li Yanrong arrives in full armor, roaring with fury. He strikes with his blade, storms the execution ground, cuts down the villains, saves his younger brother, and washes away the injustice in blood. Beneath the open sky, the two brothers stand shoulder to shoulder, their father’s murder avenged.