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Yanny leaves Hong Kong to escape a love affair gone bad. She goes to San Jose to visit Ling, an old friend she hasn't seen in years. It seems like Ling and her husband Tang lead an ideal, carefree existence. But during the short span of five days, Yanny uncovers the truth hidden behind the facade as she discovers the unspeakable secrets that propel all three down a fatal path shattering their American dreams and imperiling their lives.

Yoon Hyun Suh (Ahn Jae Wook) is an adoptee who grows up in the United States. He becomes successful as a top manager of a hotel chain. He is assigned to do business in Korea. He falls in love with Choi Young In (Lee Bo Young), a sassy concierge from the hotel he is assigned to. There is trouble still looming because Kang Soo Jin (Oh Yoon Ah) who is Hyun Suh's best friend's ex-wife comes back with vengeance in mind. The three become entagled in this love triangle.

Mootha, the naive and innocent twin, came to find a job in Bangkok where she met Veekit, her co-worker. They became friends and Veekit started to like her, but she only liked him as a friend, he was heartbroken but continued to be there to help her. When she met her boss, a managing director, named Janepope, she fell in love with him. Janepope is a player, he already has a wife and 3 kids, but he tricked Mootha into falling for him anyway. When his wife found out that he was having an affair with Mootha, she humiliated Mootha at work and told Janepope to stop seeing her. Mootha became depressed when she found out that Janepope wasn't allowed to see her. Due to the humiliation, she went back home where she committed suicide, which was on the same day as when her older twin sister, Moonin, came home. Moonin felt that she was one of the caused for her sister's death, so she decided to get revenge for her sister by going back to Bangkok and pretended to be Mootha. Credits go to swtannenat

Detective Oh Jeong Su is a detective in the homicide division. A killer, who kills in a seemingly random manner, appears. Detective Oh Jeong Su decides to take revenge against the killer, even if it forces him to work outside the law.