Posse

In 1898, Jesse Lee and the U.S. Army's 10th Cavalry bear the brunt of enemy attacks during the Spanish-American War in Cuba. The segregated unit fights to hold their ground as pressure mounts from the opposing forces. Jesse's leadership is tested early as the unit struggles under fire.

Graham orders Jesse to shoot a White prisoner to justify retreat, threatening harsher punishment if he refuses. Jesse refuses to kill a man in cold blood. In retaliation, Graham executes the prisoner and tries to appoint Little J as his successor to the 10th Cavalry.

Graham forces the unit to wear civilian clothes and plans to rob a Spanish gold shipment to fake a desertion and cover his theft. The scheme reveals Graham's corrupt ambition: to seize gold and eliminate an unmanageable black unit. Tensions rise as the operation moves forward.

Weezie creates a distraction, and the 10 turn the tables, shooting Colonel Graham and his cavalry down. The surviving rebels escape Cuba with heavy losses, leaving behind a tainted victory. The group's sense of safety remains fragile as they head toward the United States.

The remnant of the 10 Cavalry flee Cuba and head for New Orleans, shedding their Cavalry uniforms for new identities. They are now hunted by Graham's forces and others who want to silence them. Their bond deepens as they move toward the West.

In New Orleans, Little J reunites with gambler Father Time and they embark on a tense poker game that ends with Time being caught cheating. Little J helps Time escape, and they retreat to a hotel room, muttering 'We were never here' to cover their tracks. Graham's men retaliate, shooting the gamblers in the back as Time and Little J barely escape.

The squad heads west, pursued by Graham's forces that refuse to let them forget their past. In a rough western town, Jesse commissions gold ammunition to confront the lyncher who killed his father, King David. The journey marks a personal reckoning on the horizon.

Jesse arrives in Freemanville, a town founded by King David, where Carver has become sheriff. The community grants him wary protection as old allies resurface and old loyalties are tested. Bates and his deputies loom, threatening the town’s fragile peace.

Bates leads a brutal assault on Freemanville to capture Jesse, beating Weezie and pressuring the townsfolk to surrender. Little J fights back but is fatally beaten, and Obobo and Papa Joe are captured. The attack exposes the town's vulnerability and steels Jesse's resolve.

Jesse and Father Time disguise themselves as Ku Klux Klan members to storm Cutterstown’s jail and free Obobo and Papa Joe. Jesse shoots a deputy and disrupts Bates’s hold on the town, while Colonel Graham arrives and aligns with Bates. The jailbreak becomes a catalyst for the town’s larger rebellion.

Jesse exhorts a small group of Freemanville residents to resist Bates, arguing that the sheriff wants the land to sell to the railroad. The townspeople stand up to defend their home as the standoff tightens. The threat of Graham's cavalry looms, setting up the climactic confrontation.

Graham arrives with a Gatling gun, turning the fight in his favor as Freemanville buckles under fire. Jesse loads a stick of dynamite into the gun, destroying it and killing several of Graham’s troops. Weezie and Father Time join the fray, tipping the balance towards Jesse’s side.

Carver tries to flee with Freemanville’s land deeds, only to be confronted by Lana and Time. Time defeats a deputy but is killed by Carver in a brutal exchange. Bates reveals the 50-50 land deal, and Jesse returns to confront the treachery.

Jesse confronts Bates in a final showdown and kills him, ending Bates’s scheming over the town. Graham arrives to seize Lana and deliver a last duel inside a saloon, which ends with Graham dying and the saloon burning. Jesse, Weezie, Obobo, and Lana watch as the town fights the blaze and claims its future.

An elderly man recounts Jesse’s legacy to reporters, sharing the memory of the Black cowboys he met as a child. He presents the small book Jesse gave him, now a symbol of hidden histories. The closing caption states that thousands of Black cowboys whose stories were omitted from Hollywood’s history.