Li Ben, a modern food delivery rider, accidentally travels back to the final years of the Great Yan dynasty on his electric scooter, crashing into the besieged Pobei Army, which is surrounded by a massive barbarian force. The 800 surviving soldiers mistake him for a divine general sent from heaven. To make matters worse, he becomes bound to a system that allows him to travel between two worlds and learns that he has a terminal illness. If he wants to survive, he must complete the system's missions. Li Ben initially plans to keep his head down and flee to save his life, but through a twist of fate, he leads the 800 surviving soldiers to break through the encirclement and embarks on the path to conquering the realm.