In Augustus, a futuristic city driven by steam and gears, a strange disease called "emotional theft" is spreading. Patients will forget their most precious memories for no reason. The heroine Eleanor, a talented perfumer, accidentally discovered that she could temporarily awaken those stolen memory fragments through specific scent combinations while making perfume for her guests. This attracted the attention of Silas, the hard-faced bailiff who was pursuing the case. Silas initially scorned Eleanor's "synesthesia" ability, but through repeated collaborations, he had to admit that Eleanor's unique way of using her sense of smell to trace traces of emotions was the only key to solving the mystery. The two went from mutual suspicion to working together, and went deep into the foggy core of the city. They finally discovered that "emotional theft" was not a disease, but a shocking conspiracy. Radical members of the city council were collecting "happy memories" of citizens through mechanical devices, trying to inject humanity into a cold city central processor "Themis" to realize the cold utopia of "absolute fairness" in his eyes. The highlight is that the heroine does not have superpowers, but uses the artistic skill of "fragrance" to the extreme, and explores the case through the link between smell and emotion, which is full of novel sensory experiences and steampunk-style romance.
