Feng Luo, an international mercenary, is transported to a technologically advanced world during a mission. After living in this new world for several years, a sci-fi online game called "War Chronicle" sweeps across the entire interstellar federation. Familiar equipment such as Desert Eagle, Barrett, AK47, Apache, RPG, etc., awakens his memories! Terminators, Zerg, Resident Evil, the Force... The missions that appeared after a system update leave him both confused and surprised! So, Feng Luo enters "War Chronicle" and becomes a sniper.