I'm not sure specifically as there could be many novels with that title or concept. It might be a story that seems believable or likely to happen in the context of the fictional world it creates.
Since we don't have information about the 'a likely story novel', it's hard to say who the main characters are. But generally in a novel with a title like that, the main characters might be ordinary people. For instance, it could be a working - class couple trying to make ends meet, or a group of friends who find themselves in a series of events that test their relationships. It all depends on the genre and the specific plot of the novel.
It's possible that 'A Likely Story' in 1947 was a critical success, receiving praise for its unique plot or the way it tackled relevant issues of the era. Or it could have simply been a beloved story that brought joy to many readers or viewers.
It's an expression used to show disbelief or skepticism. Like if someone gives an excuse that sounds too good to be true, you might say 'a likely story'.
I'd say 'A Likely Story' is a solid movie. It has a good balance of drama and comedy, and the cinematography is impressive. But some might find the ending a bit predictable.
It might be an adventure story. The main character could be on a quest for something valuable or important. Along the way, they keep encountering signs or events that they interpret as the lucky star guiding them. There could be exciting encounters with different characters and obstacles that they overcome with the help of this supposed lucky star.