After his younger sister is brutally murdered, elite detective Zhou Sihan is willing to ruin his career to go undercover in the criminal den of Zhao Family Village.
To take revenge, he becomes a ruthless wolf, dancing with the devil.
He thinks he's found the only glimmer of light in the darkness: a girl named A Ya, fragile and pure, a victim he must protect with his life.
He gives everything to teach her to fight back, sees her as an ally in his quest for redemption, and fights side by side with her.
He clears every obstacle from her path with his own hands, pushing her toward the light.
Until the day they close the net, when the gun turns toward him.
He watches her shed her disguise and sit on the throne of power he once swore to destroy, smiling with an innocence that is also cruel:
"Officer Zhou, I was the one who took your sister's life."
"And you were my finest blade."
--When the sword of justice becomes the executioner's blade of evil.
--In this trial in the abyss, who is really being judged?