Commercial genius Shen Tinglan is originally the long-lost true daughter of the Gu family. To visit her gravely ill grandfather, she enters the capital, disguising herself as an accountant to lie low in the Gu family. For their respective situations, she and Fu Xizhou, the idle heir secretly controlling northern trade routes, enter a sixty-day fake marriage contract. While joining forces to crack the traps successively laid by Gu An'an, Fu Changgeng, and the stepmother to settle old scores, the two shed their defenses while spending days and nights together. As the sixty-day deadline comes to an end, a short-term contract transforms into a long-term companionship of running towards each other.