The princess of Kental was lost as a young child. They searched for years but she was never found. By now the princess would be sixteen, and the search for her is starting all over again. With better technology, can they ever find the heir to the throne? Keina is a poor girl, she's always been a poor girl. She grew up in the streets, stealing anything she could. With her dog, Mazy, always by her side. One day the palace starts looking for the princess by taking everybody's blood in the kingdom to try to find a match. In a turn of events, blood is switched. Everyone thinks they've found the princess. But instead, they find Keina's best friend, Aqua. They allow Keina to stay in the palace, along with the "princess", Aqua. Will they figure out who the real princess is or will Keina live as the "princess's friend" forever?