The Bath Mafia tells the story of Peaky Blinders, a legendary gangster family in Birmingham after the war. Dating back to 1919, family members had a hobby of sewing razor blades between the brims of their hats, which is the origin of the name "razor party". Serian Murphy will play a ruthless gangster, Tommy Shelby, the leader of the family brother, bloodthirsty and ruthless. At that time, veterans, revolutionaries and criminals all struggled to survive at the bottom of society. When the police chief in Belfast stepped in, the reign of terror created by Tommy and his gangs began to tilt.