Cha Seungjo, French name Jean Thierry Cha, is the youngest Korean president of a famous luxury brand called Artemis. He believes that women go after luxury brands because of their high prices. His strategy for management is to raise the price of products to achieve increased sales. Han Segyeong is a person who tries her best in getting everything and lives by the motto of “Self-achievement generated from hard working”. Though she studies design, because of her family’s financial problem, she doesn’t have the opportunity to study design abroad. And for this reason, not having any abroad studying experiences, she is often rejected by job interviewers. After three years, surprisingly, she is offered a job as a temporary worker at a clothes designing company called GN Fashion. She doesn’t become a designer in the company; she becomes an errand girl for the head lady. When she is delivering some bags once, she bumps into Seungjo’s car.

When Segyeong is about to quit her job, her team leader tells her that the reason she can’t become a designer is that she doesn’t have the taste for fashion, leading her to reconsider her decision. Segyeong’s best friend, Choi Ahjeong, helps her to find out the life of Seo Yoonjoo in order to know how to become a “Cheongdam-dong daughter-in-law”. She finds out that Yoonjoo actually is called Cha Yoonjoo when she has lived in France because she has married a man there. Segyeong guessed from this information and the words of Shin Minhyeok, who is the president of GN Fashion, that she is accepted specially by Yoonjoo.

Yoonjoo asks her brother, Seo Homin, to stalk Segyeong secretly. From the pictures taken by Homin of Segyeong, she sees Seungjo is in it. On the other hand, Seungjo’s doctor/best friend, Heo Dongwook, says Seungjo cannot control his emotions mentally, he can never cry. Secretary Moon Jaewook finds So Inchan’s location; he is at his mom’s funeral at the time. Seungjo happens to witness the scene and he orders the company not to go after Inchan anymore. Instead, he sends flowers to the funeral house to express his sorrow for his mother. Under the warning of his father that someone is secretly taking pictures of him, he catches Homin and warns him not ever to do it again. Seungjo also moves to the same neighborhood where Yoonjoo is living.

Yoonjoo tells Segyeong that in order to go into Cheongdamdong, she must find herself a “time rabbit” (a person who can introduce her into the upper-class circle of Cheongdamdong). Tommy Hong, the most popular domestic designer in Cheongdamdong, is the perfect fit for being the “time rabbit”. So, Segyeong then decides to part time work at the restaurant where Tommy usually goes to in order to catch his attention. Meanwhile, Seungjo, full of tears, tells Dongwook what he has seen about Segyeong. Dongwook tells Seungjo that he thinks he might like Segyeong. Back when Yoonjoo has wounded Seungjo deeply by leaving him, he changes. He tries to find a way that true love exists, that it does not need to be only maintained through money. Segyeong’s actions makes him believes that love truly does exists, proving that his thoughts are right. He then recommends Segyeong to Tommy.

Segyeong is not willing to give up her “time rabbit” after what has happened at the ball. She goes to Tommy to reason with him. But instead, Tommy sees her desire, what she wants in her heart. Yoonjoo goes to see Tommy; she learns that the person who he is trying to pair up with her husband’s sister, Shin Inhwa, is actually Seungjo.

Segyeong’s best friend, Ahjeong, accidentally sees her diary on how to get into Cheongdamdong, and Segyeong then confesses to her on what she is planning to do. Ahjeong helps Segyeong to look into Seungjo, at that time they know as Secretary Jin. Segyeong got suspicious of Seungjo when Ahjeong tells her that there is no one called Secretary Jin at all in Artemis. Segyeong then asks Seungjo fiercely on whom he actually is. Under this moment of pressure, Seungjo makes a lame excuse that he is actually the President’s personal “shadow ninja”.

Segyeong calls Yoonjoo and asks her the answer of the first danger among the three she must encounter if she wants to go into Cheongdamdong. Yoonjoo replies that it is love. When Segyeong returns home, she sees that her parents are chasing after her sister, Han Sejin. Segyeong learns that her parents want her sister to quit school for a while and help out their shop. At first, Sejin does not want to, but after Segyeong promise to buy her a new bag, she agrees to do it.

When meeting up with Chairman Cha llnam again, Yoonjoo advises him to stop the planned marriage. Now at the party, after battling with his own will, he finally gains the courage and goes into the party. He is ready to indirectly confess to Segyeong in his opening speech. But what he does not know is that Segyeong has left the party because of her shock of the news.

Segyeong and Yoonjoo find that they have more in common than they have thought. Seungjo is determined to hold on to his future this time. Tommy plots for his own gain.

Seungjo and Segyeong are finally together, but will it last? Yoonjoo comes clean about her past to Segyeong and prompt her to make a choice. Tommy and Inhwa face an obstacle.

Seungjo and Segyeong are facing opposition from all sides. Inhwa is suspicious and is determined to get to the bottom of this. Tommy shifts his priorities.

Inhwa discovers a shocking truth and is struggling to keep it hidden. Segyeong stays strong and deals with Seungjo and her family differences. Chairman Cha is changing his outlook.

Tommy and Yoonjoo temporarily stop a disaster. Inhwa reveals the truth to Chairman Cha but is met with an unexpected request.

The stakes are raised when Seungjo discovers the truth, and Segyeong must do all it takes to prevent him from self-destructing.

Segyeong confronts Seungjo for his actions. Seungjo struggles to understand. Yoonjoo is at peace with her faith and devises a plan.

Yoonjoo makes a decision and is at peace with it. Seungjo faces reality. Segyeong stops dreaming and lives on with her own life. We find out how everything ends.