During the latter years of the Goguryeo era, a ferocious battle looms as the Tang dynasty, led by Emperor Taizong, plans an invasion to seize control of Ansi Fortress. The daunting task of defending this critical stronghold falls into the hands of Yang Man-chun, an unyielding and resourceful general. Despite limited resources and facing an imposing Tang army, Yang rallies his men with unwavering determination, creating a formidable defense strategy. Reinforcements from the central army are scarce, and skepticism about their survival permeates among his soldiers, yet Yang’s leadership instills hope.

As the siege ensues, Yang and his troops face relentless assaults from the formidable Tang forces. Utilizing clever tactics and displaying remarkable bravery, they manage to hold off wave after wave of attackers. Amidst the turmoil, bonds of brotherhood and loyalty are tested and deepened in the face of overwhelming odds. Despite the constant threat of betrayal and the weariness of prolonged combat, Yang’s strategic brilliance and unyielding spirit drive his men to exceed their limits. Their valiant efforts not only symbolize resistance but also a defiant stand for their homeland’s pride and honor against a seemingly unstoppable enemy.