The tragic love story between brotherhood and love. What will you do when your brother falls in love with the same girl as you do? "Mai" who is the devoted brother, tries to do everything even join the car robbery gang to get the money for medical bill. When his younger brother "Men" knows that the girl he loves has a special feeling to "Mai", this causes "Mai" lose his father, risk his brother's life, make his life in danger and almost lose his love. How this situaion ends? Please follow "Romantic Blue".