I'm not sure specifically as I haven't read it. But it might be about a child named Helmut who is forsaken, perhaps facing hardships, loneliness, and trying to find his place in the world.
Apart from Helmut, there could be other important characters. Maybe there's a mentor - like figure who takes Helmut under his or her wing and guides him through his difficult journey. There might also be antagonists, characters who oppose Helmut for various reasons, perhaps because of jealousy or fear of his potential. Another possibility is a friend or companion who stands by Helmut and helps him face the challenges in the world that has forsaken him.
I'm not sure exactly as I haven't read it. But it might be about a character or a group of characters who are abandoned or left in a difficult situation related to the moon. Maybe it's a fantasy story where the moon has some sort of power and those forsaken by it are dealing with the consequences.