Ling Shuangyue, who had practiced in the mountains for twenty years, was kicked down the mountain by his unscrupulous master, who euphemistically called him "experience the world of mortals and help the poor." And the target of her poverty alleviation turned out to be the female CEO of Bingshan who was worth hundreds of billions but was poisoned and died soon. In order to complete the master's strange mission and obtain the legendary ultimate secret book, Ling Shuangyue was forced to sign a marriage contract with the female CEO and became a "brother-in-law". During the day, she is the most unreliable bodyguard around the president, making jokes and watching the show; at night, she transforms into a mysterious doctor and stirs up the storm. She thought it was just a deal where everyone got what they needed, but unexpectedly, President Bingshan looked at her more and more strangely, and the undercurrent hidden under the city also drew her into the center of one ridiculous whirlpool after another...
