The Fifth Season is unique in so many ways and utterly magnificent how it all fits together. The story takes some time to get used to as we follow three different plots, one of which is written in 2nd person point of view, but they fit together beautifully and as you get 1/3 of the way through the book you keep wanting to press on.
Earth (or this Earthlike fantasy planet) has become a world with disastrous nuclear winter-type long seasons (referred to as Fifth Seasons) due to geologic volatility. Humans live in comms (communities) which prepare for these long seasons. There is a long and often referenced history to the world as it is and there are humans able to keep it stable through their ability to control the earth with their minds. These people are often hated, but necessary and controlled by the guardians.
There is so much to say about this book, but I don’t want to give too much away. Undoubtedly it is one of the best science fiction / fantasy novels of all time. I cannot recommend The Fifth Season enough.