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.

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...