“Blood may make you related, but loyalty makes you family.”

When their beloved adoptive mother, Evelyn Mercer, is brutally murdered during a convenience store robbery in the dead of winter, four brothers are drawn back to the frozen streets of Detroit — not for a reunion, but for retribution.

Bobby Mercer (Mark Wahlberg), the hardened street hustler who never played by the rules, returns first — all fire and fury. Angel Mercer (Tyrese Gibson), the smooth-talking ladies’ man, follows with his own dangerous connections. Franklin “Frankie” Mercer (Dwayne “The Rock” Johnson), an ex-Marine with the precision of a soldier and the instincts of a hunter, brings a tactical edge. And Jack Mercer (Tom Hardy), the youngest and most hot-headed, wears his rage on his sleeve. Together, they are chaos with a cause.

What begins as a search for justice quickly spirals into a collision course with Detroit’s criminal underworld. Their path takes them through backroom deals, gang-run territories, and into the crosshairs of Victor Kane, a ruthless kingpin who runs the city’s rackets like a corporation — with cops on his payroll and blood on his hands. As the brothers dig deeper, they uncover not only the truth about their mother’s death, but a chain of corruption that stretches from the streets to City Hall.

Gunfights erupt in blizzards, muscle cars roar through ice-slick roads, and loyalty is tested when old wounds resurface. The brothers must confront their own volatile dynamics — grudges from the past, betrayals unspoken — before they can stand together against a force that wants them buried next to Evelyn.

By the final showdown, bullets will fly, blood will spill, and the Mercer name will be carved into Detroit’s history once more — not just as four men bound by adoption, but as a family forged in vengeance.

If you want, I can also make the cinematic poster prompt for Four Brothers (2025) in your realistic, mid-torso, face-focused style.