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Directed by Dante Lam ("Sniper", "Stool Pigeon"), this action-thriller stars Jay Chou and Nicholas Tse as estranged brothers. When an elite counter-terrorist unit based in Hong Kong heads to the Middle East to escort the creator of the deadly smallpox virus to safety, little did they know that they would be betrayed by their team leader. As a result of the incident, Jon Wan (Jay Chou) returns home with a limit on his life and the loss of his fiancee. However, another blow comes in the form of his mother's secret: that she separated him from his older brother, Yang (Nicholas Tse), when they were young. To assuage his mother's guilt, Jon travels to Malaysia to find his brother and father and bring them back, only to find himself caught in a plot to wage a bio-terrorist war.