In 1937, the Anti-Japanese War broke out in an all-round way, and the mountains and rivers were shattered and turbulent. Lin Yu, an originally ordinary young man, was involved in the turbulent whirlpool of espionage due to fate. He has a mysterious intelligent assistance system. Although this plug-in is not invincible, it can provide him with clue analysis, danger warning and other help at critical moments. With his extraordinary courage and wisdom, Lin Yu successively obtained the triple identities of military commander, Japanese special agent, and underground party, and lurked inside the enemy.
In the military command, he was appreciated by his superiors for completing outstanding tasks one after another; in the Japanese special organization, he dealt skillfully and understood the enemy's conspiracy plan; and as an underground party, he always adhered to his faith, sent out precious information, and made great contributions to the anti-Japanese cause. Facing the suspicion and temptation from all forces, Lin Yu walked on thin ice, but he was always able to avert danger with the help of his own abilities and plug-ins. In the bloody world of spy wars, he gradually dismantled the enemy's numerous conspiracies and composed a thrilling anti-Japanese spy war legend.