In the book, Song Wan is the only daughter of the Marquis’s household. Her parents dote on her, and she loves the male lead so much that she refuses to marry anyone else. The female lead’s father forces her to marry the vicious second male lead. The female lead transmigrates into the book and binds herself to a rescue System. Gu Jincheng’s mother died in childbirth, and his father despised him. He was saved by his general uncle and grew up safely until the age of sixteen. Then his uncle was framed for treason, and the entire family was executed. Gu Jincheng escaped, became the emperor’s weapon, and rose to become a prince of a different surname. In the end, however, he was accused of treason, lived alone, and met a miserable end. To return to the modern world, Song Wan must stop Gu Jincheng from turning evil. She saves him again and again. To save him, she even endures countless hardships to find the Poison Doctor Immortal. As they spend time together, they fall in love. But after learning the truth, Gu Jincheng, determined to avenge his uncle, conspires with the enemy forces and fractures the court’s power, intent on changing the dynasty. Song Wan cannot bear to see the land plunged into ruin, so she tries to stop him. In the end, she sacrifices herself to save him. Gu Jincheng lets go of his hatred, defeats the invaders, and helps the young Fifth Prince ascend the throne. He becomes regent and devotes himself to finding a way to bring the dead back to life.