Sheng Xin Ren (Alice Ke) is a staff member in the Sales Department ofJing Shi Department Store. At age 25, she has worked there for four years. She is tasked with training and mentoring Qin Zi Qi (Roy Chiu),28, a new entry-level member of the Sales Department. Unbeknownst to her and almost everyone else there, Zi Qi is the son of Qin Mu Bai (ShenMeng Sheng/沈孟生), the Chairman of Jing Shi Department Store. Zi Qi's father has challenged him to a test to prove he deserves to lead Jing Shi Department Store - Zi Qi will have to live on a lowly entry-level salary for one year, without the luxuries he is used to, and cannot reveal his true identity.
Xin Ren and Zi Qi clash - she is frugal, saving every single cent so she can buy a house in Taipei for her and her mother. He is used to living large and spending big. She is extremely loyal to Jing Shi Department Store and is content with her job but he thinks the department store need to clean house and get rid of senior management who are stuck in inefficient ways.
To improve sales, Xin Ren suggests inviting her idol Yu Cheng Feng (James Wen),an internationally renown designer, to set up a counter in their store.Despite Yu Cheng Feng having publicly stated that his designs would never be sold in department stores, Xin Ren with Zi Qi tagging along setout to get him to accept their proposal.
Zi Qi is initially attracted to Zheng Kai Er, the assistant manager in the Merchants Department. Kai Er agrees to be just good friends but is jealous of the relationship between Zi Qi and Xin Ren. Kai Er tries to ruin the relationship between the two on a number of occasions. Zi Qiand Xin Ren, despite their constant bickering, realize they like each other and begin dating.
Zi Qi's mother returns to Taiwan from the United States. She tries toforce Zi Qi's father to promote Zi Qi to Executive Vice President but backs down when Zi Qi convinces her that his father is right to challenge him. He has also gotten used to his new life. Zi Qi's mother initially disapproves of Xin Ren who she feels is beneath Zi Qi but comes to accept her.
When Zi Qi's identity is revealed, Xin Ren is upset that he lied to her, but she eventually forgives him. The series ends with Xin Ren and Zi Qi's wedding.