Legend has it that a long time ago there was a revered king in Aulis. After his death, his heart turned into gold and was buried underground to protect the kingdom from prosperity for generations...
Hundreds of years later, the "King's Heart" was stolen by outsiders and disappeared. Aulis then led troops to fight in all directions. The war spread to the Kingdom of Bangpei. Princess Ophelia of Bangpei, who could not bear the destruction of her homeland, woke up from death and returned to the past under the magic of the Time Apostle.
In order to retrieve the lost secret treasure "Heart of the King", Ophelia possesses the dead daughter of the Aulis noble Count Diaseran, but unfortunately she found that her master's reputation during her lifetime was really bad. After her rebirth, the princess, whose family was ruined, worked hard from the bottom. Not only did she have to break the many doubts about the secret treasure and uncover the mystery of her family background, but she also had to fight against the aristocratic man who had cruelly abused and abandoned her. What greeted her was a series of conspiracies.
This is a fantasy adventure in a different world with twists and turns. A brave princess transforms into a small noble to fight back in the enemy country. She collects seven magic crystals to find the heart of gold, and wins the favor of a handsome nobleman.