titty-eyed mosquito's feed

Okay so I read the first two volumes of a novel and I really liked the story, but beginning with volume 3 the plot takes a wild turn. Like the author threw away everything they built in the previous volume,cthe story and the characters threw the window and wrote a completely different novel. At this point I'm not even sure if I want to finish volume 3 or just leave it at the second volume. This is just a rant cuz I haven't found a novel page for it