The narrative arc of Peaky Blinders: The Immortal Man centers on the inevitable passing of power from Tommy Shelby to his estranged son, Duke. Having lived as a recluse following the events of the series, Tommy is drawn back into the criminal underworld when Duke, hungry for rapid influence, aligns himself with the fascist John Beckett. Beckett orchestrates a historically inspired Nazi plot, Operation Bernhard, intending to crash the British economy with counterfeit money. The situation turns dire when Beckett murders Ada Shelby after Duke refuses to do the deed, forcing Tommy to emerge from retirement not just to save his country from ruin, but to avenge his sister. Before he can effectively wage this war, however, Tommy must first cleanse his own conscience, confronting a dark secret he has long suppressed.
A crucial element of Tommy’s internal struggle involves the shocking truth about his brother, Arthur. It is revealed that Tommy himself caused Arthur's death, previously disguised as a suicide, in a desperate bid to be free of the liability his brother represented. This admission is vital for the character; by finally acknowledging his role in Arthur's demise, Tommy unburdens his soul, allowing him to focus his remaining energy on the threat at hand. The climax unfolds in a Liverpool warehouse where Tommy and his crew dismantle the counterfeit operation. While he succeeds in killing Beckett and destroying the Nazi funds, Tommy sustains a mortal wound during the shootout. Rather than succumbing to a random injury or an accident, Tommy orchestrates a final, symbolic act of succession.
Guided by the prophecies of the gypsy Zelda, Tommy knows that Duke is destined to kill him to become the next Rom Baro, or King of the Gypsies. In his dying moments, Tommy refuses to let his death be meaningless; instead, he commands Duke to pull the trigger. This act is not merely a mercy killing to end Tommy's suffering, but a necessary ritual to legitimize Duke's leadership. By taking his father's life, Duke exorcises his lifelong resentment and formally accepts the heavy mantle of the Shelby legacy. Tommy's death serves as his final gift to his son—a clean slate and the authority to lead without the shadow of his father looming over him. The film closes with a funeral fit for a king, marking the definitive end of Tommy’s era while leaving the door open for Duke's rule, where potential threats from banished family members like Finn and the returning Charles loom on the horizon.
