If you have seen the tv series of Cranford then you have some idea of the story, although in that another two stories by Elizabeth Gaskell was added. Cranford isn't really a novel as such, it is a series of vignettes, or short stories and it was originally published from time to time in Household Words.
There is not a main plot as such, because of the way it was originally composed, however that doesn't detract from it as something fun to read. There is a lot of humour here, and my favourite is a cow being given clothing due to an accident. This is always fun to read, and is ideal for relaxing and unwinding to.