Penelope Dresvil is an innocent and pampered little girl who is an irreplaceable treasure in her daddy's palms. But because of the vicious plans of her stepmother, Penelope experienced a lot of hardship in life. She tried to go back but discovered that her father died in an accident. Because of a traumatizing event at the age of twelve, Penelope's life ended in vain. When she opened her eyes again, Penelope discovered that she returned to the past at the age of six. She vowed to take revenge on those people who made her suffer and prevent any accident that can kill her father again. Those vicious women? Her scheming uncle? Double-faced rivals? Penelope will end their evilness and put them back in their right places.
It's been three days since Prince Lucien arrived in the Vestia Kingdom without any notice at all. At first, King Galia was lost on how to handle the case of the Crown Prince from another kingdom who suddenly visited them without any prior engagement. If he handles it wrongly, this action can be either interpreted as a provocation from the Lastoval Kingdom or a sensitive case where they kidnapped Prince Lucien. Fortunately, the older prince decided to solve this problem on his own.
He wrote a life oath stating that the Lastoval Kingdom will not do anything in case something happens to him while staying in the Vestia Kingdom. He also admits his carelessness and dismissal of their royal etiquette. And to prove its legitimacy, Prince Lucien stamped the letter with his thumb and use his blood as ink.