At the end of the Song Dynasty, war rages across the land. A modern five-member squad on a mission accidentally falls into a space-time tunnel and travels back to the northeastern territories of the Great Song, fully equipped with modern weapons. Lin Zhao, the calm and decisive team leader with a Beijing accent, commands the entire operation. Sniper Xie Changfeng and weapons specialist Ma Zhenbang bring formidable combat skills. Communications specialist Wang Haochuan, a Guangdong native, builds an intelligence network and keeps watch in every direction. Hunan-born female medic Chen Su is a battlefield rose whose miraculous medical skills save lives. Through modern eyes, they witness the Song Dynasty, where an unprecedented clash of ancient and modern cultures unfolds, and modern technology overwhelms the past with its overwhelming superiority. The Great Song is destined to become extraordinary. Watch as they use modern weapons to fight their way to survival amid the chaos of an ancient world.