Genius perfumer Su Wan was once a bright star in the industry, but a deliberately designed car accident caused her to lose her sense of smell and she fell into a silent sensory abyss. In order to find out the truth, she changed her name to "Lin Xi" and, as an ordinary assistant, infiltrated the "Floating Light Group", the perfume empire run by her ex-boyfriend Lu Yizhou. She thought she was facing a ruthless betrayer, but through repeated trials and confrontations, she discovered Lu Yizhou's hidden secrets and difficulties. He was not heartless, but he was protecting her in his own way, silently tracking down the black hand behind the car accident. When fragments of memory intertwine with clues of reality, a well-planned conspiracy gradually emerges. The truth shrouded in fog and the love isolated by lies are rekindled on the edge of danger. Su Wan must make a choice between regaining her sense of smell, exposing the real murderer, and regaining her old love. And this time, for whom will her heartbeat echo?
