The unmarried couple who broke up over the idea of saving the country reunited amidst the smoke of the fall of Peiping. He is the descendant of Baguazhang who sticks to the martial arts school and is targeted by the Japanese army. She is a firearms expert who incarnates as the "White Pigeon" of the underground party and is ordered to transfer intelligence. The family and country are broken, old grudges remain unresolved, and a city defense map hidden in the martial arts secret book tightly binds the fate of the two people again. In a desperate situation surrounded by traitors and rounded up by spies, they must use fists, feet and gunfire as blades to uncover past misunderstandings in the game of life and death, and rebuild trust and affection amidst the flames of war. This is a war of resistance that belongs to warriors, and it is also a reunion that transcends the flames of war.
