Wan Yu, who was bullied by her family, received a proposal from a mysterious man on a rainy night: "Get the certificate from me, and you agree." When she woke up the next day, she was the third young wife of the Gu family. She thought it was just a formal marriage contract, but she didn't want to parachute her husband to pamper her and protect her. Not only did he eliminate the wolf family for her, but he also domineeringly proved that "this is my legal wife" when she was questioned. From the pampering of her parents-in-law to the promotion of seniority, from marriage first and love later to the revelation of her life experience, when the joke of "10 billion wives" comes true, this marriage that started as a transaction will eventually go in a direction that no one can predict.
