Far away, in a country of music and magic, there lived two beautiful girls. Liana and Eliza are best friends. They share everything, especially their love of singing. They make a living by selling flowers. Although they live a poor life, they are still happy. However, one day a storm came and destroyed their garden. When they went out to sell flowers, they saw a hungry old woman, and Lenore gave her the only jam bread. The old woman was very happy and asked them to choose something in her basket. Liana chose a mirror. When they came home and sang in the mirror, something magical happened! A girl named Melody appeared on the surface of the mirror. Melody told them the secret of the diamond castle. Melody explained that the Diamond Castle is the place where all music was born and the place where the three musical muses lived permanently. Until an evil muse Lydia tried to take the diamond castle for herself.
The other two Muses entrusted my melody with the key to the Diamond Castle. Later, in order to protect the key, Melody hid himself in the mirror. But now she can't get out. She needs the help of Lenore and Eliza to get her out of the mirror and save the diamond castle. So the two girls started their journey-a long trip away from home. On the way, they took in two puppies and met two boys. After all kinds of difficulties, the temptation of a better life and the test of friendship, they opened the diamond castle with songs and got a reward, and lived happily in their own cabin from then on.