She is the daughter of the current prime minister and his playmate. He had promised her that he would make her his bride. When she was five years old, a fire burned down her whole family, but she luckily escaped... He thought she was dead and was so sad that he had a high fever and lost all his memory when he woke up. She also accidentally rolled down the cliff, erasing all memories of him from her mind, but was accidentally rescued. Eleven years later, when he meets her again, can he remember his promise to her...