It has been 50 years since humans moved to their new base on Mars. Most of the culture in this era is created by AI, and humans only need to enjoy it. There is a girl who works hard in the capital city of Alba. In her free time after work, she strives to become a musician. She always feels that something is missing. Her name is Carole. There is a girl who was born into a wealthy family in the city of Herschel. Her dream is to become a musician, but no one around her can understand her ideas. She feels that she is the loneliest person in the world. Her name is Tuesday. A chance brings two people together. They want to sing. They want to sing. If they are together, they feel that they have a chance to do it. They may only create a small wave, but this small wave may turn into a big wave...