"Flash Marriage: Your Richest Husband" tells the story of the flash marriage between Su Ning, the eldest daughter of the Su family, and Lu Yanshen, the richest man. Lu Yanshen, as a powerful third-generation rich man, has an almost overbearing possessiveness towards Suning. He takes her under his wings in a unique way and starts the ultimate sweet pet mode.
Suning once cared about her ex Chi Yu, and this past became the source of Lu Yan's deep jealousy, which also caused the relationship between the two to heat up through testing. Lu Yanshen's friend and brother Lu Wenjie often witnesses the ups and downs of this relationship, while Suning's best friend Shang Guanxi is her emotional support. In addition, Lu Yanshen's predecessor Su Yu occasionally appears, adding twists and turns to the plot, but it also highlights his firmness towards Suning.
The story revolves around the run-in of a flash marriage couple. Amidst the interference of love rivals, exes and family trivial matters, the two gradually let go of their guard and move from a contract-like beginning to a deeply bound true love, writing an urban love chapter full of possessiveness and pampering.