Yun Xi, a poison doctor from Huaxia, transmigrates into the body of a Yun family daughter whose past is shrouded in mystery.
Her family includes a drunkard father, a simple-minded elder brother, a gambler younger brother, a younger sister with twisted values, a stepmother who loves stirring up trouble, and a seemingly indifferent old madam who is actually the family's biggest boss.
To escape this dysfunctional family as quickly as possible, leave their chaotic life behind, and uncover the mystery of her past, she uses a marriage contract to bind herself to a stranger.
But... this contract husband is a big deal, and his identity is incredibly complicated. She has to take down scheming white lotuses on the side, expose green tea impostors, solve cases, and rescue people. Even after she's done it all, their agreed-upon divorce date keeps getting pushed back.
One day:
She puts on the air of a sage from beyond the world and pretends to read his fortune. "Your Highness, the weather's lovely today. It's an auspicious day, perfect for a divorce."
The sly Prince, all smiles, replies, "A fine reading. Very auspicious... perfect for having a baby!"