Following the events in The Maze Runner - The Scorch Trials, Thomas and the surviving gladers are kept at the WICKED facility. Thomas, Brenda, and 2 gladers escape and go to Denver, where the majority of the book takes place.
The society is very well described and structured, the apocalypse looked frighteningly real, and yet nothing is fully uncovered, the author still keeps the reader in the dark about some topics, which is what has kept my attention and interest.
I recommend it to apocalypse-, and dystopia lovers, and have personally enjoyed every page of this book.