Detective Yu Qinghe carries the past, is calm and aloof, acts decisively, and is determined to clear up the fog of old cases.
Her partner Zhang Zhinan is calm, restrained and thoughtful. She walks side by side through many puzzles.
They run into the darkness, chasing justice that has been long overdue.
When all the belated truths come out, all the belated redemptions will finally arrive.
Purpose: Old case, belated truth