On the day of our wedding
The female lead and the male lead are in love, but due to the male lead's mother's secret obstruction, they are forced to marry the male lead's brother, the second male lead. On the day of their wedding, the second son eloped with the second daughter, and later the family mistakenly reported that the second son was killed by criminals. In order to continue the family line, the mother of the male lead designed for the female lead to become the male lead's concubine, and the two of them combined without knowing each other. Afterwards, the male lead became the prime minister, but the second male lead, who thought he was dead, returned with his family to seek refuge. After going through twists and turns, the male and female leads cleared up their misunderstandings and finally achieved perfection.