In a world where memories can be censored, tampered with or even erased, Su Wan is a special perfumer. She uses fragrance as a medium to weave and awaken warm and beautiful memories for guests and soothe the wrinkles of the soul. However, no one knows that deep in her dazzling array of spices, there is a bottle of dark brown perfume without a label - it is a poison that she spent five years preparing with despair and obsession, just to open a black box sealed by the highest rules and find out the truth about her sister's death.
Lin Xi is the sharpest blade of order in the Memory Review Bureau and firmly believes that rules are the barrier to protect the soul. Until a routine inspection, she smelled the same smell of incriminating evidence in the bottle of forbidden fragrance as on the document signed by her mentor, Chen Zhengming, a senior executive of the Prosecution Bureau. The high wall of faith began to collapse from the first crack.
When the perfumer's stubborn key encounters the prosecutor's collapsed wall of order, the two women, who should be enemies, are forced to join hands into a dark abyss paved with lies, experiments and sacrifices. They discovered that what was buried was not only the grievances of their loved ones, but also a whole cruel system in the name of purification but in fact erasure.
On the desperate road to pursue the truth, mutual suspicion turns into life and death dependence, and sharp confrontation turns into soul resonance. Amidst the ruins and blood, they saw an understanding and desire in each other's eyes that was unparalleled in the world. The scent of sin tainted by searching for sin has quietly fermented into the bone-gnawing fragrance of love.
Concept: Memory is identity, truth is redemption. Love is not about whitewashing peace, but about still choosing to stand side by side after recognizing all the darkness.