In the parallel world of 1932, in the smoke of the fall of Northeast China, the seriously injured special soldier Yang Qi woke up in the snowy field, with a broken history weighing heavily on his shoulders. At this time, a mysterious military system called "Red Alert" was bound to him, becoming a glimmer of light in the dark age.
Yang Qi used this as the core to establish a secret base in the occupied areas to gather people who did not want to be slaves. From the first underground arsenal deep in the dense forests of Liaoning, to the coordinated operations of guerrilla columns and "special armored units" on the North China Plain; from the use of communication technology beyond the times to build an intelligence network, to the southern guerrilla zones relying on systematic supplies to form a solid stronghold... This unique armed force, with advanced technology as its bones and national blood as its soul, runs along the country's north and south, and its existence itself is a continuous attack on the invaders' strategies.
He knows very well that the system is just a kind of fire, and the real power comes from hundreds of millions of awakened compatriots. When the flag is finally planted on the city walls of Guangzhou, it is not only the end of the journey for Yang Qi and his comrades, but also a testimony of an ancient nation's unyielding struggle and recovery of dignity in the darkest moments - technology may change the shape of war, but victory will always be based on the belief of every "unwilling to be a slave to the country's subjugation".