This film tells the story of a female SWAT officer from Lingbei City who goes undercover to infiltrate a cross-border criminal gambling syndicate. Xiao Chen successfully infiltrates the “Geluxiban” organization and, working in coordination with the task force, helps dismantle the criminal operation and captures the ringleader, Xiao Yang. However, at that moment, Xiao Chen discovers that behind all the crimes lurks a mysterious figure known only as “Brother Tiger.”

Set in the early Republican era, when bandits ran rampant across the western deserts, this film unfolds as a legendary biopic of an extraordinary figure. The "Wolf King," after provoking a powerful crime syndicate in the heartland, is forced to flee to the remote northwest. There, he unexpectedly crosses paths with "Jade Lotus," the most sought-after courtesan of the Joyful Tower. However, when Jade Lotus sacrifices herself to save him, she is mortally wounded. With her dying breath, she implores the Wolf King to avenge her family by eliminating the ruthless bandit leader known as the "Ghost King"—the scourge of the west.

One day, the sacred Buddhist relics presented to the Emperor of Tang from the Western Regions mysteriously vanish. The Emperor assigns the case to the upright and dashing Lord Yuan for investigation. No sooner does Lord Yuan receive the task than a young woman named Xi Yan unexpectedly turns herself in, claiming responsibility. However, during the interrogation, Lord Yuan realizes that Xi Yan has little to do with the theft. Instead, her true motive for surrendering is her long-standing admiration for him. This leaves the principled Lord Yuan deeply conflicted—especially as he finds himself increasingly drawn to her. But complicating matters further, he discovers that his closest friend has also been secretly in love with Xi Yan for years.