Guan Xing was suddenly reborn on the eve of the Battle of Maicheng. He returned to the moment when his father Guan Yu was about to suffer a disastrous defeat with his past life memories. With his past life memories, he saw through Lu Meng's plan to cross the river in white clothes in advance, persuaded Guan Yu to strengthen Jiang defense, and at the same time adjusted Jingzhou's defense deployment to gain strategic initiative for Shu Han. Guan Yu was confused by his son's sudden display of military talent, and a crisis of trust arose between father and son. Guan Xing had to find a balance between loyalty and family affection. Facing Soochow's surprise attack, Guan Xing was ordered to guard Jiangling at the critical moment. He defeated Lü Meng's vanguard with a small number and defeated a large number, showing his military talent beyond his age. Determined to change history and save the fate of his father and Shu Han.
