Three years ago, top agent Qin Lie was expelled from the organization for "collaboration with the enemy and treason." His mentor died tragically, his fiancée turned against him, and he fell from the clouds into the mire, becoming a street thug doing odd jobs to survive.
It wasn't until a conflict in a bar that he accidentally rescued the mysterious woman Su Qingyao who was being hunted, and unexpectedly revealed the key clue to the unjust case that year - the secrets of the "Falcon Project" hidden by his mentor before his death, which are being jointly fought over by transnational organizations and ghosts in the court.
The former "Cold Blade" reappeared: he broke into the consulate at night to seize the film, set up a trap in the casino to catch the mole, fought fiercely with gangs at the pier, and defeated the killer team in front of the consulate... Every time he took action, he shocked everyone!
But as the investigation deepens, Qin Lie discovers that there is another hidden reason for his fiancée's betrayal, that there is a bigger conspiracy behind his mentor's death, and that his own life experience is even closely related to the "Falcon Project".
When the intrigues of the court and the Jianghu gangs became a mess, Qin Lie held a blade in his left hand to kill the enemy, and held evidence in his right hand to reveal the truth: "I will take back what I owe you with interest; whoever harmed my mentor, even if he hides in the ends of the world, I will take his head!"
