Four people from very different backgrounds with very different personalities and professions portray the mysterious and secret lives of woman and men in their thirties. One of them is Eun Dong Joo. An optimistic woman who has endured more than enough the bitterness in life. Innocent and bubbly like a can of soda, her life and existence get taken from her. Sa Bi Na, 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. Cha Pil Seung, a man out of the four, is a detective who is cold-hearted when it comes to love. And the last out of the four is Choi Joon Ki, a man who has everything but love. He dedicates everything to Sa Bi Na. 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, Eun Dong Joo, Cha Pil Seung, Sa Bi Na, and Choi Joon Ki, become entangled in which it becomes a turning point in each of their lives. A traumatic dream shared by Dong Joo and Pil Seung soon reveal a horrific secret in their memories of 28 years ago. In that deep secret, Sa Bi Na and Choi Joon Ki exist. The dangerous game between the ones who hide and the ones who chase begins now.