Su Nian, an autistic forensic trace-analysis prodigy, joins a special crimes unit and becomes entangled in a series of bizarre murders involving mechanical dolls. With her extraordinary eye for detail, she teams up with Captain Lu Zheng to solve multiple eerie homicide cases, confronting the killer's fractured childhood and a past strikingly similar to her own. Behind the cases, the "Rose" organization, led by Bai Rui, begins to emerge. The organization conducts drug experiments on autistic people, paralyzed elderly individuals, and others, committing countless crimes. As Su Nian pursues the killer, she embarks on a journey of self-redemption and ultimately uncovers part of the truth, only to discover that the organization's leader may be connected to one of her own loved ones.