The spy drama "Heroes of the Extreme/The Sting" tells a historical story that happened in 1949. In 1949, although the War of Liberation was coming to an end, the enemy's power in Shanghai was still extremely strong and even indestructible. All the initiative was in the hands of the enemy, and our revolutionaries were always in the traps and traps set by the enemy... In the alleys late at night, a group of patriotic scientists secretly evacuated Shanghai under the escort of the Communist Party. However, when they thought everything was going well, they were already deeply surrounded by the enemy, and what was waiting for them was a three-dimensional attack by the Kuomintang spies who had already set up an ambush. In the hail of bullets, Ding Zhihan, a girl who returned from studying in the United States and moved with her parents, escaped by chance under the sacrifice of underground party member Zhu Zhonghua. However, her parents, like all other scientists, could not escape the fate and were exposed on the streets. Her lifesaver Zhu Zhonghua was also arrested due to injuries. The failure of many actions made the Shanghai underground party realize that there was a traitor hidden in their team, and he was like a poisonous thorn deeply piercing our underground party organization. In order to verify the identity of the traitor "Dilong", Ding Zhihan took the risk to continue to hide. However, she didn't know that her identity had already been exposed by the traitor under Yu Shenglong's nose. Yu Shenglong set up the final trap, and Ding Zhihan became the scapegoat of the traitor "Dilong". She was imprisoned in the enemy's death row and was also included in the death list by the underground party organization. Shanghai was liberated and Yu Shenglong retreated to Taiwan. In the crisis, Ding Zhihan and Lan Fei were rescued from the death row. They risked their lives to return to Yu Shenglong's office, hoping to find secret evidence to prove their innocence. However, the result was far beyond her expectations... Who is the real traitor? Can Ding Zhihan wash away her suspicion? Where will her love end up?