In the seventeenth year of Tianyuan of Great Chu, war broke out across the border and undercurrents surged in the court. Xu Jin, the eldest son of the Zhenbei Hou Mansion, was born with deer eyes and as gentle as jade. However, he was regarded as "cowardly and incompetent" by the whole family because of his sensitive and kind nature. Xu Yan, the younger brother born to his stepmother, is submissive and gentle on the surface, but secretly jealous of his elder brother's status as the eldest son. He joins forces with the powerful officials in the court and sets up a scheme to push Xu Jin into a desperate situation - he is defeated at the border, his military power is taken away, his father dies of illness, and his whole family is confiscated.
When Xu Jin died with hatred and opened his eyes again, he returned to the year when he was fifteen, the eve of a turning point in his fate. Xu Jin, who was resurrected, was bound by a mysterious system - the "Military Marquis Development System". By completing historical military missions, he could acquire the skills of famous generals and ancient arms.
This time, he was no longer a gentle reindeer left to be slaughtered. In this troubled world, he will step on the conspiracy and betrayal, step by step towards the position of military prince, so that those who are jealous of him can only look up at his back. And he also discovered that his brother's jealousy was not the only danger he had to face. A shocking storm sweeping across Chu was about to come...
