The Shadow's Edge

In Macau, the police are hot on the trail of a heist crew led by longtime fugitive The Shadow, ultimately identified as former intelligence officer Fu Lang-seng, which includes his five adoptive sons. The crew, featuring ringleader Xi Wang, hacker Xi Meng, and muscle Hu Feng, break into a bank vault to steal a notebook and escape undetected by hacking the surveillance system. The police discover that the vault belongs to a wealthy businessman and learn the notebook contains an encryption key to his cryptocurrency wallet. They deduce that the crew will target a digital asset management company at Macau Tower. As the heist crew infiltrates the Tower, they find an unexpected HK$1.5 billion worth of cryptocurrency in the same virtual vault. They steal the currency despite Fu's objections, which allows the police to arrive on the scene and force them to parachute into Wynn Macau. When the crew is cornered, Fu enters the hotel to provide cover, enabling their escape with varying disguises. A barista in the Tower inadvertently captures Fu's image when taking a picture of the commotion.

With no leads following the nearly flawless heist, Wang decides to enlist retired surveillance expert Wong Tak-chong for help. Wong, skeptical of modern technology, prefers old-school methods and assembles a surveillance team, including He Qiuguo, whom he believes can approach Fu unnoticed. With Wong's guidance, the police quickly identify the disguised crew members through surveillance footage and connect Fu to a series of heists committed by a criminal known as Shadow twenty years earlier. Initially, He is cold towards Wong, revealing that her father died during an operation involving Wong, whom she blames for his death. However, during a night watch, she breaks cover to protect a woman from thugs and nearly gets hurt, only to be saved by Wong. Wong reveals that her father was killed after Wong also broke cover to act heroically, and the two reconcile.

Meanwhile, Fu is enraged by his sons' disobedience and punishes them, causing tension with Xi Meng and Fu, although Xi Wang remains loyal. After realizing his identity has been compromised, Fu goes into hiding. Wong's team soon locate him at a market, and begin to follow him back to his lair. He volunteers to tail Fu, who is initially wary but later relaxes when Wong, posing as He's father, arrives to defuse the situation. The next day, Wong invites Fu over for dinner at a police-occupied apartment, where Fu tests their intentions. During the dinner, He learns that Wong has been secretly watching over her since her father's death. That night, an attempt on their lives by Xi Wang fails, leading them to suspect their cover has been blown.

On their way back to headquarters, Wong's vehicle is ambushed by mercenaries, but the police manage to fend them off. Meanwhile, Xi Meng lures Fu to an orphanage, where he finds thugs waiting to kill him. After a fierce fight, Fu defeats them. Xi Wang then appears to hold off Fu and instructs Xi Meng to detonate the orphanage before dying in the blast, but Fu survives the explosion and is arrested by the police.The police believe the adoptive sons will flee Macau through shipments leaving Wynn Palace. While being transported, Fu escapes, prompting his crew to flee as well. Hu and the others are subdued by Wong, while at the nearby Cotai East station Fu fatally stabs a policeman and Xi Meng. As he dies, Xi Meng recites the key to the cryptocurrency account, consisting of a passphrase of 12 English words. The remaining two adoptive sons are arrested in the hotel.

In the post-credits scene, a third twin brother of Xi Wang and Xi Meng is revealed and he places a bounty on Wong, He, and Fu.