Originally the adopted daughter of a Jiangnan embroidery family, Su Qingli just wanted to live a stable life with her square inch embroidery frame. A ridiculous marriage contract tied her to the powerful, ruthless and taciturn Duke Zhenguo in the capital. The Duke's Mansion was as deep as the sea, and she thought that what was waiting for her would be cold looks and humiliation, but unexpectedly, the man who was so decisive in killing people in front of him only panicked in front of her. He gave her the most gorgeous brocade in the world, just to make her smile; he removed all obstacles to her progress, but said that all he wanted was a warm lamp when she returned home every day. When secrets from the past came flooding in, she discovered that this marriage, which started as a transaction, had already been a long-planned love affair.