Seven years ago, the Xie family was overthrown. Princess Xie Zhaowei escaped from death and put all the blood debt on Pei Yan - the man who had been her childhood sweetheart but personally participated in the night of the destruction of the country. Seven years later, the two reunited because of a "bone lamp case". One was in charge of Tingxue Tower to pursue the old case, and the other was charged with a serious crime and guarded the unspeakable truth. From testing each other to dying side by side, the closer they get to the truth, the more they discover that the so-called evidence of loyalty, betrayal, grievances and massacres are all true and false. The one she fell in love with might actually be her enemy; and the one he desperately guarded was never innocent. When the bones of the old capital, the three hundred children, the imperial conspiracy and the burning of the city are revealed one by one, they must answer the same question: If you love someone, you must first admit that he is guilty. Can they continue to love each other?
