Su Wan, a cultural relic restorer, traveled through time and became the daughter of a criminal official of the Dajing Dynasty because of a thousand-year-old silver hairpin engraved with "Goodbye, my late mother", and fell into the residence of the regent Xiao Jue.
She is familiar with history: the iron-blooded regent in front of her will be executed by Ling Chi in a palace coup three years later. She tried her best to change her fate against fate, but step by step she pushed the tragedy to the predetermined end. He was trapped in power and tactics, and used humiliation to protect her; she, with the bottom line of modern people, longed for companionship rather than protection. They fell in love thousands of years apart, and their love was full of daggers.