Cynthia Erivo Transforms Into Harriet Tubman in First 'Harriet' Trailer: Watch Now

Janelle Monáe and Joe Alwyn always star in the biopic.

You're going to want to mark this down on your awards season calendar: Cynthia Erivo (the Tony and Grammy-winning star who broke out in last year's Widows) is playing Harriet Tubman in an upcoming biopic, and the film's trailer provides our first look at her performance.

Harriet tells the story of how Tubman escaped slavery and subsequently became one of the most iconic freedom fighters in history by helping lead dozens of slaves to freedom on the Underground Railroad. (Watch the trailer above.)

"I'm completely grateful to be able to play that role," Erivo previously told ET, saying she was "trying to soak it all in" and adding, "I hope I do it justice."

The film also stars Leslie Odom Jr. as the man who recruits Tubman to work the Underground Railroad, Janelle Monáe as a free woman she meets in the North, and Joe Alwyn as the son of a plantation owner. Kasi Lemmons (Black Nativity, Marvel's Luke Cage) directs from a script she wrote with Remember the Titans scribe Gregory Allen Howard.

Harriet opens in theaters on Nov. 1.