You are the only daughter of the Gauhar family, the greatest family of doctors in South Korea. Your father and mother have died since you were little, when you were little your grandfather raised and took care of you, until you were 15 years old, your grandfather died.

After that your grandfather entrusted you to the Yosan family, the leader of the Yosan family, Jared Yosen is your grandfather's best friend. Since childhood you have been matched with Jared Yosen's 3rd grandson, Ivan Yosan.

Now you are 35 years old, you and Ivan will soon be engaged, at least until you find out that Ivan has been cheating on you, Ivan never loved you, Ivan only used you, to get the Yosan family and the Gauhar family.

Initially you asked Jared Yosan to cancel the engagement nicely, but he didn't want to listen to you. So you looked for a way, until Ivan's mistress, Raisa, came by herself. Raisa tries to make you look like you're having an affair, luckily you're smart, so you trap Raisa with her own trap.

After that, it wasn't you, but Raisa and Ivan who were caught having an affair, at first you wanted to tease Ivan's uncle who was still single, but Raisa actually made your plan easier.

You act like you're hurt, and say that you don't want to separate Ivan and Raisa's love. You thought Jared Yosan would cancel his engagement, but he instead offered you his other granddaughter.

You have no other choice, at least you don't have to marry Ivan, if it's about canceling the engagement you can think about it another day, for now you have to follow Jared Yosan's wishes.

Keandra Yosan, she is Jared Yosan's eldest granddaughter, she is a famous actor, but she is cold and always alert. William Yosan, Jared Yosan's second grandson, he is a great designer, he is friendly, but you know he doesn't look like a good person. And Weasley Yosan, Jared Yosan's youngest grandson, he is a cheerful and spoiled child. Keandra and Weasley are siblings, they are orphans, so Keandra always spoils Weasley.

Finally you choose Keandra, at least she might be able to cooperate, but it turns out it's not as easy as you thought, Ivan doesn't give up and still wants to marry you. And finally Ivan justifies any means to destroy Keandra, you didn't realize it at first, until Weasley came and asked you to let Keandra go, because Keandra intended to stop being an actor to help you.

You are really dizzy, you can't sacrifice Keandra, do you really have to seduce Leon Yosan? Actually he's not that old, he's also still single, but he's still the uncle of your ex-fiancé. So you decide to ask Jares Yason for time, he agrees and lets you get to know his three grandchildren.

Two weeks after that, suddenly someone poisons Weasley, luckily you were able to save Weasley in time. After the investigation, it turned out that Ivan and his mother had poisoned Weasley, Jared Yosan was really angry, especially since Ivan's mother did it because she was caught cheating on Weasley. Ivan's mother didn't want Weasley to leak it, so she intended to kill Weasley, and the most surprising thing was that Ivan was not a descendant of the Yosan family, Jared was really angry and kicked Ivan's mother and Ivan out of the Yosan family.

In Weasley's room, you were checking on Weasley's condition, until Weasley said that he knew Ivan's mother put poison in his milk.

You were silent for a moment, you stared at Weasley in disbelief. "If you already knew, why did you still drink it?"

Weasley grabbed your hand, and put your hand on his cheek. "If I didn't do it, they wouldn't have been kicked out of the Yosan family. They've bothered Nuna, I know this is dangerous, but they deserve it, and I know Nuna will save me."

For some reason, you felt something in Weasley's voice and gaze, something dangerous. You've saved Weasley's life several times, and you've always treated him like your own little brother, but now you realize, there's something strange and wrong with Weasley.