To strengthen their business alliance, the Su and Fu families arranged a marriage: the icy CEO sister Su Qing was to wed Fu Chengzhou, the ruthless head of the Fu clan, while her clingy younger sister Su Wan—who followed her sister everywhere—was matched with Fu Yang, the family’s second son and A-list actor. A mix-up on their wedding night sent the sisters to the wrong bridal chambers: Su Qing and Fu Yang sparked an intense connection in the dark, while Su Wan ended up spending the night with the frosty Fu Chengzhou. The next morning, both couples uncovered the truth, but chose to swap their marriages to safeguard family interests, thus starting two vastly different contract-to-love stories.