The series revolves around a civil servant named Gong Ah-jung (played by Yoon) who pretends to be the wife of the wealthy hotel heir, Hyun Ki-joon (played by Kang) in order to impress her former friend. It is directed by Kim Soo-ryung and Kwon Hyuk-chan, produced by Jo Sung-won and written by Kim Ye-ri. On its first airing it ranked 20th nationwide.
Gong Ah-jung (Yoon Eun-hye) is a fifth-level government employee of the Ministry of Culture, Sports and Tourism. At the beginning of the series, Ah-jung lies to an antagonistic friend about being married as a form of revenge. The lie quickly snowballs (due to several misunderstandings) until Ah-jung realizes that everyone is gossiping about her supposed, secret marriage to Hyun Ki-joon (Kang Ji-hwan), the very wealthy president of World Hotel.
As the rumour spreads, a miserable Ki-joon is forced to combat the rumors to his friends as he decides a plan of action in getting Ah-jung to correct her lie. Ki-joon and Ah-jung decide to take action to squash the rumors, with Ah-jung agreeing to call together her friends so she can confess her discretion. When this doesn't go as planned, Ki-joon decides to take legal action against Ah-jung. However, after a series of events that bond the pair together, they both agree that pretending to be married for a short while would be mutually beneficial though Ki-joon promises that Ah-jung's lie is not forgiven and that he will eventually go ahead and follow through with his lawsuit.
Things become even more complicated when Ki-joon's ex-fiance, and a close friend of his brother Oh Yoon-joo, returns from France. After a friend of Ah-jung sees Ki-joon and Yoon-joo together and raises suspicious of infidelity to Ah-jung (and leaves Ah-jung embarrassed), Ah-jung forces Ki-joon to promise that he will not be caught with any women for the duration of their sham marriage.
Ki-joon and Ah-jung grow closer and more fond of one another over the duration of their marriage and Ki-joon finds himself questioning his commitment to his former fiance Yoon-joo. Eventually, however, Ki-joon makes the decision to be with Ah-jung despite the heartache he is sure to cause his ex lover.
