Silas travels through time and becomes a 100-year-old man. In an era of war, his wife and son are all killed by the Beidi, leaving him to depend on his twelve-year-old granddaughter. When the government forcibly conscripts his granddaughter into the army, the centenarian Silas resolutely decides to enlist in her place, awakening the Centenarian Wargod System. With the divine strength and blade skills granted by the system, the old man goes on a rampage on the battlefield!