An ancestral marriage contract binds Yun Yao, the successor of Kesi, to Tan Tai Yao, a business tycoon. She once had a secret crush, but now she can only abide by the "agreement" and work hard to protect her love and sobriety in the deep sea of wealth. He is as cold as ice and regards marriage as an obligation, but he is gradually attracted by her gentleness and tenacity. When his secret love came true, he married first and fell in love later, and he turned into a maniac who doted on his wife, the ultimate doting lover. Let's see how the sober little wife in the world uses silk thread as a matchmaker to pluck the heartstrings of the cold-blooded CEO, gain both career and love on the road of being a group favorite, and compose a sweet and warm marriage song together.