In 1844, the British Admiralty sends Sir William Walker, an agent provocateur, to the island of Queimada (which translates to "Burned" or "Burnt"), a Portuguese colony nestled in the Lesser Antilles. The British government has a clear agenda: they aim to open the island for economic exploitation under the Antilles Royal Sugar Company. Walker's primary mission is to orchestrate a rebellion among the enslaved Africans against the Portuguese rule, which the British plans to replace with a government led by compliant white planters.
Upon his arrival in Queimada, Walker forms a friendship with the charismatic José Dolores, whom he persuades to spearhead the slave uprising. He also encourages influential landowners to reject the Portuguese authority. The rebellion led by Dolores proves successful, culminating in Walker facilitating the assassination of the Portuguese governor during a well-planned night coup. Subsequently, Walker establishes a puppet government loyal to the Antilles Company, headed by the idealistic yet ineffective revolutionary Teddy Sanchez. Walker convinces Dolores to accept the new regime and lay down his weapons in return for the promise of abolishing slavery. With his mission completed, Walker moves on to his next assignment in Indochina.
Fast forward to 1848, Dolores becomes disillusioned with the puppet regime's collaboration with the Antilles Company and leads a second rebellion aimed at expelling British control from Queimada. After six long years of conflict, in 1854, the company brings Walker back to Queimada (having located him in Plymouth, England) with the approval of the Admiralty, assigning him the task of quelling the rebellion and restoring order to the island. Fueled by resentment towards the company's exploitation, President Sanchez doesn’t cooperate. Walker orchestrates a coup, leading to Sanchez's ousting and execution, and sets up a regime that entirely serves the company's interests. British troops are called in, and guided by Walker, they swiftly suppress the insurgency and capture Dolores.
Despite their shared past, when Walker tries to save Dolores from execution, the rebel leader declines, declaring that freedom is earned, not granted. Tragically, Dolores is hanged shortly thereafter. As Walker prepares to leave Queimada, he is confronted by a man reminiscent of Dolores, who then stabs him to death. In his final moments, Walker gazes around to see the disapproving stares of the oppressed community that he had once sought to liberate.
