Dai Wenbo

After a critical intelligence leak, a national security unit launches an intensive investigation. But successive setbacks in their arrest operations reveal a shocking truth: the trail leads back to within the unit itself. Amidst a storm of trust and betrayal, a silent battle begins to unfold...

Zhan Peng, son of a martyred railroad cop, fulfills his dream to serve in his father's former post at Xiatong railway, only to find the job more complex than imagined. Initially distrusting veteran officer Tu Hongjiang, his suspicions peak when Tu behaves strangely during a drug trafficking case. However, Tu gradually proves his integrity through actions, and the two build mutual respect while solving cases together, ultimately uncovering and arresting the hidden mastermind.

The story of sharpshooter Zhang Taofang, a young army recruit who at age 22 sets a record during the Korean War by reportedly killing or wounding 214 American soldiers with 435 shots in just 32 days.

Zhan Peng, son of a martyred railroad cop, fulfills his dream to serve in his father's former post at Xiatong railway, only to find the job more complex than imagined. Initially distrusting veteran officer Tu Hongjiang, his suspicions peak when Tu behaves strangely during a drug trafficking case. However, Tu gradually proves his integrity through actions, and the two build mutual respect while solving cases together, ultimately uncovering and arresting the hidden mastermind.