The film begins with a title card indicating that it is based on true events, setting the stage in 1963 and paralleling multiple narratives. We witness Cassius Clay (Eli Goree) on the verge of defeat against Henry Cooper at Wembley Stadium, where Clay's taunting leads him to a near disastrous knockout. Simultaneously, in the vibrant atmosphere of the Copacabana in New York, soul sensation Sam Cooke (Leslie Odom Jr.) performs to an unimpressed, predominantly white audience marking a pivotal moment in his career.
Meanwhile, NFL star Jim Brown (Aldis Hodge) returns to his roots in Georgia, greeted by family friend Mr. Carlton (Beau Bridges) at a grand plantation. Though Carlton praises him with fervor, the warm welcome quickly turns sour upon Carlton's use of a racial epithet, revealing the deep-seated prejudices that remain in society. At the same time, Malcolm X (Kingsley Ben-Adir) returns home and confides in his wife, Betty (Joaquina Kalukango), about his contemplation of leaving the Nation of Islam.
As the narrative unfolds, we leap into February 25, 1964, where the men converge in Miami for Clay's monumental match against Sonny Liston. Prior to the fight, Malcolm meets with Clay at a motel, where they engage in Islamic prayer rituals. That night, in a shocking upset, Clay claims the title of world heavyweight champion. Following the match, Malcolm invites his three friends to his motel room, hoping for a reflective gathering, yet anticipation of celebration turns to tension. Disagreements arise as Malcolm criticizes Sam for his mainstream success and suggests he’s betraying the black community.
In a crucial moment, Malcolm’s assistant and bodyguard, Kareem (Lance Reddick), provides a sense of security, highlighting the atmosphere laden with conflict. The group wrestles with their identities and responsibilities, particularly Malcolm’s increasing paranoia about being surveilled by the FBI and his emotional distress regarding his allegiances to the Nation of Islam.
As the night progresses, the dialogue becomes more charged. Malcolm's aggressive questioning of Sam’s artistic choices leads to a physical confrontation that Kareem and a young Nation of Islam member, Jamaal (Christian Magby), swiftly defuse. This confrontation peels back layers of internalized racism and socio-political dynamics, as Jim shares his aspirations of becoming a film actor while grappling with his own racial identity.
As Sam and Cassius contemplate their futures, a significant moment arises—Cassius articulates the essence of "Power" as the ability to live authentically. Despite the friction in their relationships, there’s an underlying bond and a shared vision of empowerment. The tension boils over again, with Malcolm and Sam at odds about the impact of their success, leading Sam to storm out after a particularly heated exchange.
Yet, amidst conflict, there’s camaraderie; they briefly step out to experience life outside of their pressures—old friends reuniting over small errands, grappling with the implications of their fame. Following their return to the motel, Malcolm lays out a radical proposal—he intends to break from the Nation of Islam to forge his own path. Cassius rebuffs Malcolm's invitation to join this new cause, filled with feelings of betrayal.
In a twist of fate, the press catches wind of their gatherings, prompting Cassius to speak on his newfound beliefs, a decision that propels their lives into uncharted territories. That evening, the aftermath unfolds joyfully as they toast to Cassius's decision. Meanwhile, Malcolm confronts impending threats, noticing the ominous presence of the same white men from before, underscoring the constant danger that looms.
The film captures momentous events: Sam’s poignant debut of "A Change Is Gonna Come" on The Tonight Show, Cassius changing his name to Muhammad Ali, and Malcolm's turbulent fallout with the Nation of Islam which culminates in a firebombing of his home. The film concludes with a powerful quote from Malcolm on his own fate, foreshadowing the tragic events that would lead to his assassination just days later, signifying the harsh realities faced by those who fight for justice and equality.
