When Suzhou embroiderer Shen Qingyu was restoring a Ming Dynasty dragon robe, she accidentally discovered a Morse code hidden in the warp and weft of the tapestry silk. Forced into the vortex of the espionage war, she used Suzhou embroidery skills to convey information in the cheongsam patterns, but she didn't know that she had already become a pawn in the game between multiple forces. When the head of the secret service Gu Xizhou approaches with a secret mission, and when the enlightenment teacher reappears as an underground party, a spy war picture scroll woven with golden thread and blood and tears slowly unfolds in Suzhou in 1936.
