The story revolves around twin sisters who get untangled into an incident and gets separated. Years passes in a blink of an eye and the twins meet each other in the most unexpected way. Yuri ( y/n 2 ) who dreams to become a doctor and save the lives of people meets Jeongguk with the same motive to save life's of people as a police officer whereas for Y/n lives a dry life with no value of lives and have Taehyung by her side who is manipulative and dangerous for the people. Continue the prologue in the book -- --- Author : Get ready for the roller coaster ride .