"Sword" tells the story of Wu KeFeng, a high-ranking general of the Kuomintang, during the war of resistance against Japan, feeling the great cause of the Chinese Communist Party, joining the revolutionary camp and hiding himself in the enemy's internal work and becoming a glorious "undercover general." Ji ShaoKang, fellow military officer of Wu KeFeng, fell in love with and gave birth to maid Wang HanMei in his hometown. Ji Han mastermind Wang HanMei forcibly married to his cousin Wu KeFeng. Wu's parents opened and are willing to accept mercy. Wu KeFeng is deeply aware that Wang HanMei has something to do with Ji ShaoKang. Its politics are vague and dilemma. Coincides with the fall of the mountains and rivers, Wu KeFeng pain do not home, resolutely embarked on the journey of war, since then do not ask family members. On the eve of the fall of the dangerous city, her mother and mother died and Han Mei found himself in a funeral. When her daughter lost her life, her only child died and she was fortunate enough to be rescued by the New Fourth Army in distress. Under the education of the party, Wang HanMei joined the revolutionary work and was dispatched into the enemy's Central Committee to become an excellent party agent. After the victory of the Anti-Japanese War, Jiang Fangquan attacked the liberated areas. The party launched Wu KeFeng, codenamed "Mi-1", and ordered him to carry out counterrevolutionary tasks and disintegrate the enemy forces. For work, Wang HanMei, code-named "Miyazaki II," also went to the military to help Wu KeFeng. Ji ShaoKang, who became the agent of the Central Government, was sent to the army to carry out an anti-espionage mission. Three fellow villagers with deep grudges and entanglements gathered in battlefields to exert their energies at the time when the rainstorm came and did not forget to stay in the trap of complex emotions for a long period of time. Wu KeFeng Zhi Tiefi city plans, secretly destroyed the city defense facilities, lobbying commander Ma HuaiAn. The successful disintegration of the enemy step by step and the retaliation of the majority of the progressives have repeatedly taken risks and taken risks as exposure to the brink of encirclement by Ji Shao-Kang and the military commissioner Lin Shuang Mu. For the sake of single contact, Wang HanMei has long been unaware of Wu KeFeng's identity. However, Wu KeFeng knew Wang HanMei owed a great deal of money, but he could not apologize face to face. When the victory was finally seen, the opportunity to talk about the heart and soul is at hand, but it has already passed away, numerous comrades, including Wang HanMei, traded the success of the task with tragic sacrifices. Wu KeFeng bereaved his comrades in arms, went to Nanjing alone, ready to accept a more difficult test. The victory of the war of resistance against Japan, the people of the whole country look forward to the peaceful establishment of the nation, and Chiang Kai-shek tore the "peace agreement" and issue the suppression bandits order. China's fate of the great war kicked off. In order to win the Kuomintang Northwest Army uprising, the CPC Central Committee decided to activate "Wu KeFeng" and sent "Hanami II" Wang HanMei to the Northwest Army to assist in the work. Ji ShaoKang, KMT chief of staff, went to the Northwest for inventory of Communist spies. Wu, Wang, Ji three people met to cause a forefront of the past. Wang HanMei, a beautiful and pure poor woman living on the shores of the Huai River, was forced by her parents to work as a maid for a large family and Ji ShaoKang, a Ji young master returning from studying in Japan. Ji ShaoKang and her life, began a gel-like love. After Wang HanMei's pregnancy, Ji ShaoKang, under pressure from her family, ran counter to the promise to marry Wang HanMei, who was expelled from Ji family. Wang HanMei, who was unmarried and pregnant, was taken home as a shame and hastily married Wu KeFeng at Langzui Village. Who knows that Wu KeFeng learned that Wang HanMei was unmarried and had an illicit son and he ran away from home?Wang HanMei, who did her daughters-in-law in Wu's home, gave birth to her son and thought she could steal her life temporarily. However, the Japanese artillery raged and destroyed the entire Wu family and took the sons of Wang HanMei and Ji ShaoKang. Wang HanMei, the survivor, and Wu KeLing, younger brother of Wu KeFeng, joined the New Fourth Army one after another, hoping to humiliate their hatred. Wu KeFeng, who ran away from home, was admitted to Baoding Military Academy. After graduation, he joined forces of Feng Yuxiang and was sent to Sun Yat-sen University in Moscow for study with Jiang JingGuo. He joined the Communist Party of China with honor. After returning to China, he did not return to work in the Soviet area, but returned to Feng Yuxiang's Northwest Army with an organized secret. At the moment, Ji ShaoKang also graduated from the military academy and took part in military training. He became a military special agent and was later assigned to the intelligence officer of the 68th Army. Behind the Scenes Wang HanMei, who joined the New Fourth Army, was also sent a secret squad to the Kuomintang military academy for radio reporting and was successfully beaten into the 68th Army's military unit where Wu KeFeng was an inspector. Wu KeLing's younger brother Wu KeLing was renamed Wu Hui and became an excellent spyman of the Communist Party. Ji YaQi, Ji ShaoKang's younger sister, was a young man with progressive ideology. However, he was instructed by the Central Secretaries and eventually became a pawn inside the People's Liberation Army. He used the intimate relationship with Wu Hui to send large amounts of intelligence to the enemy. Ma MengLan, the daughter of Ma HuaiAn, commander of the 68th Army, returned to England. Crazy fell in love with Wu KeFeng, Wu KeFeng hopes to develop Ma MengLan and thus affect Ma HuaiAn achieve the opposite, but can not accept Ma MengLan's love, Ma MengLan by love and hate Ji ShaoKang embrace.