29-year-old magazine reporter Mi-Roo (Yoon Jin-Seo) believes heavily that astrology decides fate. She then writes a column for the magazine based on her own dating experience with dating 12 men with the 12 different astrological signs.
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Mi-Roo has a boyfriend named Jin-Oh (On Joo-Wan) and they have lived together for one year. In fact, Jin-Oh is the only boyfriend Mi-Roo has ever had. One day, her friend Tanya (Koh Joon-Hee) tells her that Jin-Oh bought a diamond ring for her Christmas present. Ecstatic Mi-Roo goes out and buys an expensive watch for Jin-Oh in return. On Christmas Eve, Mi-Roo hands her expensive Christmas present to Jin-Oh. Jin-Oh, in return, gives her pots, fried foods and oil. He then goes to take a shower. Mi-Ro is fuming, so much so that she fries the expensive watch she bought for Jin-Oh. When Jin-Oh comes out of the bathroom he hands her the diamond ring. Mi-Roo is now completely embarrassed. An argument then ensues with the end result that Mi-Roo and Jin-Oh decides to breakup.
Mi-Roo leaves their shared apartment and stays at her friend Tanya's apartment. Due to drinking heavily the night before, Mi-Roo wakes up late and misses an important interview. At her office, Mi-Roo's boss chews her out for missing the interview. Her boss then orders Mi-Roo to go pickup a manuscript from Sophia, a famous sex columnist. Mi-Roo meets Sophia at a coffee shop. Sophia shows up completely covered, even with a scarf covering most of her face. Mi-Roo tells Sophia that astrology signs decides fate.
Days later, Mi-Roo is still waiting for the manuscript. When the deadline nears, Mi-Roo goes to Sophia's house to get the manuscript herself. She sees a man about to enter her house and asks the guy where Sophia is. The man says that Sophia told him that fate isn't decided by astrology signs, but by people and then left. Mi-Roo now realizes that she won't get the manuscript in time and is devastated. She goes to have a drink. A lot of drinks. Back at her apartment, Mi-Roo receives a phone call from her boss. Her boss tells her that if she can't get the manuscript from Sophia by tomorrow, she will be fired. Mi-Roo then sits in front of her computer and begins writing the column.
