As the 1920s begin to roar, business is booming for the Peaky Blinders gang. Tommy Shelby starts to expand his legal and illegal operations, with an eye on the racetracks of the south. Meanwhile, an enemy from Tommy's past returns to Birmingham.
Later, Tommy offers to help Polly by searching for her children, who were taken from her long ago. But in London, Tommy risks his life by meeting enigmatic leader Alfie Solomons.
When Tommy hatches a plan to take control of the southern racecourses, he also meets the aristocratic May Carleton and sees an opportunity to move up in the world. Meanwhile both Major Campbell and London gangster Darby Sabini plan Tommy's downfall.
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