Ye Wan, 28 years old, a PhD in sociology/feminist, whose research topic was "Institutional Exploitation and Female Resistance in Classical Novels", died suddenly after staying up all night writing the thesis. When Pan Jinlian was dying after taking poison (or the moment Wu Song raised the knife), Ye Wan's consciousness forcibly intervened and coexisted with the original owner's remaining consciousness, memory, and emotions.
Ye Wan's modern rationality vs. Pan Jinlian's ancient emotions and traumatic memories. A soul that tries to use methodology to deconstruct the system is trapped in the body at the bottom of the system. Ye Wan knows the "original plot", but her intervention will trigger an unpredictable butterfly effect.