Tommy goes to London to meet the wildly eccentric and volatile Duke Leon and soon discovers the extreme lengths his new paymasters are willing to go to in their quest for power. In Birmingham a personal dispute with the Italians threatens to explode into a devastating war.

As Tommy prepares to commit the most audacious crime of his career, an unexpected blow is struck, putting him under unbearable pressure. As he faces his worst fears he needs help more than ever, but is increasingly uncertain about whom he can trust. In a nerve-shredding race against time, Tommy is forced to confront hard truths about himself and his family that could change the Peaky Blinders forever.