Three years ago, China's top special forces team "Langya" was betrayed while performing a top-secret mission. The entire team was destroyed. Captain Shen Yan faked his death and escaped, transforming into the international underground killer king "Night Owl".
Three years later, he hid in a car repair stall in Jiangcheng. On the surface, he was low-key and tolerant, but in fact, he worked every step of the way, just to uncover the traitor and avenge his brother.
He kills decisively, eradicating the evildoers without leaving any survivors; he is both good and evil, does not follow rigid rules, and only sticks to the bottom line in his heart - not harming civilians, not treason, and not sparing evildoers.
The heroine Su Qingyuan is the leader of the national security special operations team. In order to track down a transnational criminal group, she approaches Shen Yan. The two go from testing each other, being wary of each other, to joining forces.
Shen Yan used killing to stop killing, and used violence to control violence. He swept through Jiangcheng's underground forces along the way, uncovered the insiders, destroyed transnational criminal networks, and finally killed his enemies with his own hands.
He doesn't want to be a hero, he doesn't seek fame and fortune, he only wants to maintain stability and protect the people around him, and lives like an urban Shura who wanders on the edge of black and white.
