Su Wanqing, the legitimate daughter of the Su Family Embroidery Workshop, married into the Marquis of Jing'an for the glory of the family. However, on her wedding night, her husband Xiao Jue and his concubine Su Lianyue jointly framed her for adultery and took away the ancestral embroidery book. She was eventually imprisoned in a separate courtyard and died of cold and starvation. When she was dying, the blood droplets pricked on her fingertips fell on the "Tongxin embroidered handkerchief" as a dowry, unexpectedly triggering a time and space rewind, returning to the year when she was a hairpin - at that time, the family was not declining, the concubine was not showing up, and Xiao Jue still showed his affection as a "gentle young master". This time, Su Wanqing put aside her obsession, used her superb embroidery skills as a blade, and retrospective memories as a chess piece, step by step: to expose the hypocritical mask of her concubine, to protect the Su family embroidery workshop that was on the verge of bankruptcy, and in repeated confrontations, she discovered that behind Xiao Jue's framing of her, there was actually a shocking conspiracy of the royal family to seize power. But the "cold-faced general" Lu Chengyuan, who had never seen her face to face in her previous life, repeatedly took action when she was in danger. Two hearts that had never met each other quietly got closer in the chess game that reversed fate. When the truth was revealed, Su Wanqing realized that the "betrayal" in the previous life was all a miscalculation, and the "protection" in this life was already destined.