Bohai, a small coastal city in my country, is home to several key military industrial units. It has always been a target for foreign spy organizations. One day, a fishing boat salvaged a dying young man who had a computer chip with our military secrets on him. This immediately attracted great attention from the security agency, and Su Dan, director of the Second Investigation Division, led investigators Wen Nuan and Duan Jun to investigate. But when the young man was rescued, he lost his memory due to a severe blow to his head. At the same time, foreign spies appeared near the hospital, looking for opportunities to silence the young man from time to time. Su Dan discovered during the investigation that the young man's secret seemed to be related to the missile test plan to be carried out in Bohai in the near future, and there seemed to be a larger spy organization lurking behind him. In order to lure the snake out of the hole, the superior leader Su Dan deliberately left a loophole for the young man (codenamed Edison) to escape during an enemy's silencing operation, while secretly monitoring and protecting him. In order to prove his identity, Edison began a journey of search with the remaining memory fragments in his mind. But every time he found a new clue, it would be secretly cut off, putting him in greater danger. And the repeated secret confrontations also made the face of the enemy behind the scenes clearer and clearer, and a mysterious spy organization codenamed "Left Hand" gradually surfaced. After several hardships, Addison fell into the trap of Left Hand. In order to get the information in his mind, Left Hand used a very dangerous hypnosis on him, which made Addison recall more. With the secret assistance of our security agency, Addison escaped from Left Hand's intelligence station again. And an unexpected collision made him regain all his memories! ——It turned out that Addison was an undercover officer directly commanded by the Provincial Security Department. His purpose was to infiltrate the Left Hand organization as an intelligence dealer, understand their entire action plan for missile testing, and then lead to the head behind the scenes and destroy the organization in one fell swoop. But just as he gradually gained the trust of Left Hand, one of the members, "Middle Finger", became suspicious of him and secretly killed him, which led to Addison falling into the sea and losing his memory. After waking up, Addison immediately contacted the organization and used his current ambiguous identity to sneak back into the enemy's lair. He first used a counter-espionage trick to make his left hand remove the middle finger by itself. Then he gained the trust of the leader's ring finger. Finally, he cooperated with Su Dan inside and outside to catch the spy organization in one fell swoop, ensuring the normal implementation of the missile test plan, and once again forged the honor of the national security fighter!