Jeon Jungkook your best friend's brother. He is a mafia. He is handsome, serious, cold and doesn't believe in love. He is a year older than you. Min Y/N his younger sister's best friend. You used to be childish. You have many talents like shooting, driving, dancing, singing and even drawing — a true all-rounder. Jungkook's sister / your best friend is Jennie. She has been your friend since childhood. You always had a small crush on Jungkook and finally confessed your feelings to him. But he rejected you immediately, saying you were too childish. A week later, you left the country without telling Jennie anything. She was worried and angry, and she blamed Jungkook for everything. For two years, you didn’t answer any calls or messages. After two years, Jungkook still hadn’t dated anyone. Meanwhile, Jennie now had a boyfriend named Taehyung, who was also Jungkook’s good friend. As for you — you lost interest in love and completely moved on from Jungkook. You had spent the last two years in Italy. You changed. You became more beautiful, elegant, confident, and fearless. You had adapted to Italian culture, spoke the language fluently, and carried yourself with a calm, mature aura. The childish girl he once rejected was gone. Now you were back in Korea because your older brother Yoongi was getting married. The bride was Italian — she had become your best friend during your years in Italy, and now she was about to become your sister-in-law. You went to Jennie’s house to personally give her and her family the wedding invitation. According to tradition, you brought gifts along with the invitation. You hadn’t told anyone you were coming back. And you didn’t know Jennie had a boyfriend. You stood at the doorstep. Wearing a long, tight black dress, elegant and perfectly fitting your figure. Your hair styled neatly, your presence calm yet powerful. You raised your hand… and knocked. Behind that door were Jennie… her family… and Jungkook. And none of them were ready to see the new you.