Selestia is one of the most successful businesswomen in the industry. At a young age, she became independent and fearless. Known as the "monster of the business world," she has ventured into almost every line of business. But behind her public image lies a deadly secret, she is the top assassin in the underworld. She eliminates rats silently and mercilessly, torturing spies and traitors without hesitation. But what if, when she opens her eyes, she awakens in another world? Will she find a way back to her own world, or will she accept the fate that has been given to her?