In the Shen family, a century-old business community in Jiangnan, the measure of inheritance is not wealth, but the "happiness test" of a marriage.
The stern second son Shen Li, and the smart lawyer Gu Wan, are involved in this power game that uses algorithms to judge the truth.
They faked their marriage for three years, from cooperation to mutual trust, from calculation to love, but behind the "happiness index" they discovered the serial truth about their mother's car accident, stepmother's conspiracy, and fund intervention.
In a gambling game where money, desire and family affection are intertwined, everyone is betting: some are betting on power, some are betting on love, and some are betting on life.