Yun He, a modern cancer patient, accidentally traveled through time and became an "orphan" with a rough life experience.
The intermittent severe pain caused by the cancer cells and the modern soul that no one can understand made her struggling in the maelstrom of power and intrigue. And the reborn general Pei Songqing is burdened with the bloody memory of witnessing his best friend being slaughtered in his previous life. His temptations and precautions against her are self-protection for fear that she will make the same mistakes as the chess pieces, and also the secret affection of "I love but dare not speak out".
Emperor Xuan's undercurrent is surging, and his confidant Xie Hanzhi is ruthlessly plotting against him. "Cousin" Liu Chengye is torn and struggling between the safety of his family and protecting her; the arrogant Princess Yongning is obsessed with Pei Songqing, and sees her as a thorn in her side and makes every effort to make things difficult for her; only the gentle general Song Mo and the kind-hearted daughter of the Hou Mansion Cheng Qingqing are the rare warmth in this cold chess game.
From the shocking change of the palace banquet's life experience, to the short-term peace in the suburban courtyard, to the life and death decision when the collaboration with the enemy case breaks out, Yun He struggles with "survival" and "self-doubt", and Pei Songqing suffers with "guarding" and "secret". When Liu Chengye sacrificed his life to atone for his sins, and when Yun He's life was exhausted and his life began to count down, in this chess game involving love, hate, conspiracy and sacrifice, in the end, only the sunflowers in Jingyunxuan's courtyard were left, and the unspoken "I'm waiting for you" that Pei Songqing guarded for the rest of his life.
Intention: Born toward the sun