Over a thousand years ago, there was a large battle against an evil dragon. With the help of a holy dragon, they managed to defeat it, and then founded the Kingdom of Vestoria. The princess’ song has the power to grant miracles and as such, people who engage in music are highly respected in the country. Lute is a student at the prestigious Ertmail Music Academy, where young people gather to pursue their dreams of becoming a musician. One day, he met a mysterious girl in the street and ended up spending the day with her. Before leaving, she said that they will meet again. He was about to have dinner with his imouto Mel when he heard a loud noise outside. There was a giant hole in his garden and in the middle of it was a small dragon.