Traveling through time and space, military historian Cheng Hao found himself in a hail of bullets at Sihang Warehouse. Beside him are the "Eight Hundred Heroes" who have gone down in history:
Xie Jinyuan, a Confucian general, is a commander who is strategizing and determined that "this place is our tomb"; on the other hand, he is an ordinary husband who writes family letters late at night and cares about his wife and children; veteran Wang Dashan, a sharpshooter with a strong Shandong accent, has a rough personality but a strong sense of friendship, and a big sword that scares the Japanese army; Recruit Li Zhenghua, a farmer from Hubei who had never even touched a gun before the war, was tempered by blood and fire and grew from a boy who was afraid of vomiting to a fearless warrior...
With awe of history, Cheng Hao ate a bowl of brown rice with them and defended the same position. He is well aware of everyone's fate, but he cannot change the flow of history. The only thing he can do is to use the gun in his hand and the knowledge of the future to remember every face, witness every sacrifice, and protect the lone army flag that symbolizes unyielding determination in this unprecedentedly brutal island defense battle!
