Since I haven't read the 'godzilla minus one novel', it's difficult to say exactly what it's about. However, given the name, it might tell a story where Godzilla has lost some of its typical characteristics or abilities. It could be about a world that has to deal with a Godzilla that is somehow handicapped. This could lead to different kinds of conflicts and resolutions compared to the regular Godzilla stories. There could be new characters introduced who have to find ways to either take advantage of Godzilla's weakened state or try to help it regain its former power.
I'm not entirely sure as I haven't read it yet. But it might be about Godzilla in some sort of reduced or different state compared to the usual Godzilla stories. Maybe it features a version of Godzilla that is weakened or has some special condition.