Emelia Flores, a spy and an assassin by profession, is betrayed and shot dead by her own family. At death, she wishes for revenge. In response, her magical jade pendant re-incarnates her soul into the body of an ordinary high schooler named Ariana Young. Ariana is a loner and a doormat, while Emelia is the opposite. Soon Ariana finds herself leaving behind the shackles of poverty and entering the world of stone gambling. Despite her ugly past, will Ariana be able to create a beautiful and successful life for herself?