In Yoona's Birthday, Yoona and her best friends (Seohyun, Jessica, and Tiffany) celebrate her birthday in a bar. They drink so much cocktail with high alchohol that can make them over-drunk (except Seohyun) but, the drunkest is Yoona. In the middle of the party, Seohyun go home because her mom call her. Then, Jessica follow Seohyun home by Limo. After the party end, Yoona and Tiffany go home by taxi. When they arrived, Tiffany run to her room because she is so sleepy. Yoona follow Tiffany but because she is drunk she don't know if she enter wrong room. The person who lived in that room was the famous and rich boy named, Lee Donghae. Donghae enter his room but he saw Yoona in living room. Then, Yoona suddently see Donghae and kiss him because she was totally drunk. Donghae shocked. Donghae carry Yoona to his bed and he sleep in the sofa. ♥♥