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.
The 'cold war forsaken story' might refer to a narrative that focuses on the aspects of the Cold War that were overlooked. For example, it could be about the small, often unreported proxy wars that took place. These were battles fought in different parts of the world as a result of the power struggle between the United States and the Soviet Union, but not always in the spotlight. It could also be about the cultural and social changes that were overshadowed by the big political and military events of the Cold War.
One common theme is loneliness. Forsaken ghosts are often alone, cut off from the living world. Another is revenge. They may be seeking revenge for some wrong done to them in life. And fear is also a big theme. The fear that the ghosts instill in the living is a key part of these stories.