Six of Crows is a book about six individuals who have teamed together to complete a supposedly impossible and deadly heist, each with their own driving motivations and goals, but all aware of what's at stake: their lives. While the book is divided among six main characters, Bardugo does an excellent job at giving each a distinct story and voice. The book, along with its sequel, take place in a fictional world where some people, called Grisha, are born with powers. While the Grisha are not an obvious main topic of the book, the world building, fantastical powers, and underlying societal beliefs about them are all still there. Six of Crows has a perfect blend of fantasy and action with just enough suspense and romance to keep you on your toes and interested.
The six main characters are tasked with going to a land, foreign to most of them, to retrieve a doctor who knew the recipe for a drug that could amplify Grisha powers and control them. Unfortunately, the doctor is burried deep within a fortress of ice with more than one group after him. I would highly recommend this book, if not just for the plot, then for Bardugo's knowledge and craft of language and her ability to excellently build immersible worlds.