At the end of World War II, an unknown young agent accidentally discovered that he had won the modular basic drawing of an atomic bomb that was improved and reduced from the Canadian cobalt bomb plan in a top-secret research institute. The drawings include the main fission chamber core, high-temperature plasma magnetic confinement system and micro-reactor-level tank armor shell design. What's even more terrifying is that the blueprint also contains the secret key to a chain reaction black technology called "Fission Avalanche." On that day, the war on the border of the Soviet area suddenly ignited. Regardless of the risk of his identity being exposed, the young man led the Pingxi military industry team to sneak into the enemy-occupied area. Within hundreds of kilometers, he snatched food from the tiger's mouth, robbed trains, bombed factories and mines, and used early small modular atomic bombs to severely damage the elite of the invading army, completely tilting the war situation of the coalition forces. However, when the blue mushroom cloud flashed in the night sky, the young man looked at the forged document with his real name written on it in the enemy-occupied area, and the battlefield was torn between the iron will of the enemy and ours. In his ears, he heard the high-speed scream of a general's bullet sniping from two heads. The boy backed away slowly, and the atomic device on the armored chassis of the tank lit up for self-test: everything had just begun.