Before passing away, the Lin family grandmother arranged two marriages for her granddaughters. Their father claimed he would let his daughters choose freely, but he had already decided that the elder sister, Lin Xueru, would marry into the Zhao family in a fishing village, while her stepsister, Lin Yurou, would marry into the Su family in Egret City. Although Xueru knew the truth, she was still forced into marrying the Zhao family. To her surprise, the Zhaos turned out to be the wealthiest family in Haicheng, and her husband, Zhao Youting, was helping the villagers become prosperous through fishing. Using her professional expertise, Xueru resolves a crisis involving fish fry and starts livestreaming to help sell oysters, earning Youting's admiration and approval as they prepare for their wedding. Meanwhile, Yurou faces difficulties after marrying into the Su family. She joins her mother in mocking the Zhaos, only to be thoroughly humiliated. Later, Su Mingzhe takes Yurou to a birthday banquet to provoke them, but Youting reveals his true identity and turns the tables. The Su family goes bankrupt, and Yurou is divorced. In the end, Xueru cuts ties with the Lin family and begins a happy life with Youting.