The hip-hop biopic "Straight Outta Compton" beat all expectations to debut with $60 million at the box office, according to Sunday estimates.

The film about the emergence of N.W.A. rap stars Ice Cube, Dr. Dre and Eazy-E became the biggest R-rated opener in August, topping "American Pie 2," and left "The Man from U.N.C.L.E." far behind in third place with $13.5 million.

“The movie tapped into something in our culture and that made it more of a must-see,” Phil Contrino, vice president and chief analyst at BoxOffice.com, tells Variety. Weekend estimates of a $56.1 million opening were upgraded to $60 million by Monday.

The movie also benefited from good reviews, the viral success of the "Straight Outta ..." meme, aggressive marketing, and the huge social media followings by the rap artists.

"Mission: Impossible -- Rogue Nation" kept rolling in second place with $17 million in its third week. "Fantastic Four" plummeted 69 percent in its second week to collect $8 million in fourth while "The Gift" showed some staying power with $6.5 million in the fifth slot.

"Ricki and the Flash" also lost only about a third of its audience in week two, coming in behind "Ant-Man," "Vacation" and "Minions" in ninth place. "Trainwreck" was 10th.

Straight Outta Compton
Straight Outta Compton
"The world's most dangerous times created the world's most dangerous group."
78
Audience
Release Aug 14, 2015Runtime 2h 27mBudget $28M
The Man from U.N.C.L.E.
The Man from U.N.C.L.E.
"Saving the world never goes out of style."
71
Audience
Release Aug 14, 2015Runtime 1h 56mBudget $75M
Ant-Man
Ant-Man
"Heroes don't get any bigger."
71
Audience
Release Jul 17, 2015Runtime 1h 57mBudget $130M

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Vacation
Vacation
"What could go wrong?"
63
Audience
Release Jul 29, 2015Runtime 1h 39mBudget $31M
Minions
Minions
"Go back to where it all began."
64
Audience
Release Jul 10, 2015Runtime 1h 31mBudget $74M