Ning Shensheng accidentally transmigrated into a book, becoming an arrogant and domineering princess. The system demanded that she make things difficult for Xue Chen, a hostage prince living under someone else's roof, according to the plot. While she complied on the surface, behind the scenes she secretly helped him time and again. Having suffered cold indifference since childhood, Xue Chen was guarded and suspicious, never believing anyone would treat him sincerely, yet his resolve slowly wavered amidst their interactions. When people in the palace tried to make things difficult for her, she met every move with composure; when venturing out to gain experience, she maintained her persona on one side while protecting him safely on the other. Moving from probing to standing shoulder to shoulder, their relationship quietly shifted.