Rob Anderson, Marlon Wayans, is a substitute teacher who is offered a full-time post but hesitates to commit. He and fiancée, Megan Swope, Regina Hall travel to Charleston, South Carolina for their wedding the next day, hoping for a quiet, joyous moment before their lives change. Megan's disapproving father, Reginald Swope, Dennis Haysbert, has invited Megan's successful ex-boyfriend Cody to the ceremony, adding tension to the trip and foreshadowing the conflicts to come. Rob heads out with his best man, Benny, and in a cruel twist of fate wakes up naked in an elevator in a distant hotel on the morning of the wedding, only to be arrested for streaking when the elevator doors open near the church. But as the church bells begin to toll, the same moment repeats—and Rob finds himself back in the elevator an hour earlier, caught in a time loop he cannot escape.
What begins as a chaotic scramble soon evolves into a deliberate, resourceful search for a way out. Desperate to change the outcome, Rob discovers that the church has never canceled a wedding in its history, and he reads this as a sign that a higher power might be guiding his fate. He improvises with remarkable ingenuity, fashioning makeshift clothes, plotting routes across town, and slowly earning the trust of unlikely allies: a wary police duo, a loyal biker gang, and even Brian McKnight who lends his name and presence to the growing networks around him. Each iteration of the hour allows him to test new strategies, refine his vows, and press closer to the church where his future with Megan awaits.
As the loop intensifies, Rob uncovers a troubling scheme: Cody plans a hostile takeover of Reginald’s company, a machination that adds personal stakes to the time loop and accelerates his determination to break free. The cycles also become moments of connection—Rob speaks with his mother, with Megan, and with Reginald, gaining deeper insight into their fears, hopes, and the love that binds them. A wrenching revelation arrives when Megan's jealous maid of honor, Vicky Eliza Coupe, abducts him and puts him back in the elevator after hiring Callie Minka Kelly to seduce him; the plan backfires in a surprising way—Callie ultimately helps Rob with his vows, shifting the balance of trust and loyalty in the story.
In the climactic final iteration, Rob enlists the help of the authorities to race across town, brings Callie to the wedding as an unexpected ally, and ensures that his suit—and his courage—reach the Church in time. He exposes Cody and Vicky, earns Reginald’s reluctant approval, and finally marries Megan in a ceremony that feels earned and earned again through perseverance. With the future now secure, Rob embraces the teaching job he was offered, choosing a steady, grounded life with Megan and a renewed sense of purpose for the years ahead. The film resolves with a hopeful tone, celebrating how love, patience, and a refusal to give up can rewrite a life that seemed trapped in a single hour.