On a bone-chilling snowy night in Beijing, Shen Xinghuai, a secret agent with a special mission, is in danger.
He is the top graduate student in the police academy and an investigator who upholds justice. On the one hand, the criminals are pressing harder and harder, and on the other hand, the criminal investigation captain Jiang Yan is testing and guarding him.
Suspicion and fetters are intertwined in the wind and snow, and trust grows in the game. When all the secrets are revealed, this encounter that began on a snowy night will eventually be each other's redemption and rebirth.
Purpose: Amidst the tension between loyalty and betrayal, love and sacrifice, the bond between the two male protagonists is used as a torch to pierce the darkness of the power of the police force, to redress the injustice, and to vindicate the justice and original intention that persist in the mud.