Kim Taehyung, a famous businessman from Italy who also goes by the name, V as a mafia. His life turns upside down, when his sister in South Korea gets killed mysteriously. Taehyung returns to Korea with his business identity to search for the people behind the death of his sister. Along with the help of a lawyer, Jeon Y/n, he discovers dark secrets related to a company who put on a mask of well being. But is that company the real culprit behind these mysterious death? Taehyung eventually starts to fall in love with Y/n despite his profession. Will he be able to find the real culprits behind his sister's death? Is he really falling for Y/n?