In the misty and rainy place in the south of the Yangtze River, the embroiderer Lin Weilan was involved in the turmoil in the capital because of an ancient painting that concealed mysteries. Taking the tattered ancient books left behind by her family, she stepped into the center of power struggles and unexpectedly met the seemingly cynical Prince Jing, Mo Chenyuan. Mo Chenyuan was attracted by the tenacity and mystery in her eyes, but he didn't know that every stitch of her stitches might involve an old case from ten years ago - the "night fire tragedy" that the royal family kept secret.
As Lin Weilan approaches the powerful with her embroidery skills, and the symbols in ancient books are gradually deciphered, she discovers that she is not only a family seeker, but also the key to uncovering a shocking conspiracy. In the process of tracking down political opponents, Mo Chenyuan and Lin Weilan went from testing each other to supporting each other, but little did they know that their fates had already been entangled in an invisible web. When the forces hidden in the dark emerge one after another, the truth of the ancient books, the grievances of the Lin family, and even Mo Chenyuan's own secrets are all exposed... A game about the country, the country, and personal love and hatred is slowly advancing toward the unfathomable abyss under the surface of the water.
