Chi Hwan believes in money and authority more than the law and strives to live at the top of the ladder. His mother had to face wrongful death when he was young, and he suffered from poverty and war alone. To put an end to the misery, he rose out of poverty to great wealth and became a successful chairman of Shine Cosmetics. Se Na, who is actually Yi Chang's biological daughter, grows up as the daughter of Chi Hwan and dreams of becoming his sole heir. She wants to be with Jin Woo, but sadly, she realizes he is in love with Hae In, Chi Hwan's biological daughter. By an ironic twist of fate, Hae In lost her mother as a child and was adopted by Yi Chang. How will the fate of the fathers and daughters unravel?

Four people from very different backgrounds with very different personalities and professions portray women and men's mysterious and secret lives in their thirties. One of them is Dong Joo. An optimistic woman who has endured more than enough bitterness in life. Innocent and bubbly like a can of soda, her life and existence get taken from her. Sabina, the second woman of the four, steals Dong Joo's life. She has an unquenchable thirst for success. And with her deadly beauty, she intends on taking the world. Pil Seung, a man out of the four, is a cold-hearted detective when it comes to love. And the last out of the four is Joon Ki, a man who has everything but love. He dedicates everything to Sabina. Although he manages to triumph his dangerous endeavor, at the end of Dong Joo and Pil Seung's tenacious chase, everything crumbles before him like a mirage. With one miraculous event, the lives of these four people, Dong Joo, Pil Seung, Sabina, and Joon Ki, become entangled in which becomes a turning point in each of their lives. A traumatic dream shared by Dong Joo and Pil Seung soon reveals a horrific secret in their memories of 28 years ago. In that deep secret, Sabina and Joon Ki exist. The dangerous game between the ones who hide and the ones who chase begins now.