The Great Battle

In the year 645, the ancient Korean kingdom of Goguryeo stands firm as a massive Tang invasion presses toward its heart. The haughty Taizong leads a wave of marching troops across the frontier, scoring victory after victory as he pushes toward the capital city. At Ansi Fortress, General Yang Man-chun holds a last line of defense with his seasoned soldiers. Surrounded and outnumbered, Yang must improvise with clever tactics and gritty resolve to slow the onslaught. The siege ramps up, testing loyalties, leadership, and the will to resist an overwhelming foe.

Released in 2018, the film is directed by Kim Kwang-sik with a screenplay by Park Eun-kyo, Yoon Pil-joon, and Mo Hong-jin. It treats a historical clash rather than adapting a single source.

With a production budget of 13,305,000 dollars, it grossed about 41,509,280 worldwide, delivering a solid return for a Korean historical war film.

Critics highlight the film's sweeping battle set pieces and the stubborn defense of Ansi as a study in leadership under pressure. The drama centers on strategy and sacrifice, framing a historic confrontation as a test of loyalty, courage, and resilience.