The Criminal Investigation Detachment of the Municipal Bureau has a famous iron triangle - the hot-blooded Lu Zhaoran, the calm and meticulous forensic doctor Shen Linxi, and the sinister Pei Qinchi. Together they have solved countless unsolved cases and are the most dazzling combination in the police force.
Until a secret room murder case plunged the three into the abyss. As the investigation deepens, they discover that there is a deeper darkness hidden behind the truth - when power overrides the law, and when justice becomes a luxury, where should they go?
This is the ultimate test of friendship, love and faith. When all the evidence points to the direction you least want to face, do you still have the courage to pursue the truth?
Purpose: When the law cannot protect innocent people, do people still have the right to seek justice through lynching?