“I feel immense responsibility playing Mollie Burkhart,” Lily Gladstone says at the top of a new Killers of the Flower Moon video. After dropping a look at Leonardo DiCaprio’s character Ernest Burkhart yesterday, Paramount has now delivered this closer look at Gladstone’s role. When Martin Scorsese’s latest had its rapturous premiere at the Cannes Film Festival, Gladstone was showered with both praise and a standing ovation for her work. Sure, DiCaprio and Robert De Niro will always get top billing in any film they’re in, but Scorsese and his co-writer Eric Roth reworked the material to make sure the movie was centered on Gladstone and the Osage Nation. Her Mollie ends up falling in love with Ernest Burkhart and marrying him, a fateful romance that will have implications for the Osage Nation and, eventually, the country at large.

“Oil wealth brought a lot of undesired attention to Osage Country,” Gladstone continues, giving us the frame of Scorsese’s film. Based on David Grann’s best-selling 2017 book of the same name, Killers of the Flower Moon takes a hard look at what happened to the Osage Nation after oil was discovered on their land in Oklahoma. In short order, white people began moving in and making moves, all in the hopes of chiseling the Osage’s wealth right out from under them. A series of brutal murders of Osage Nation people ultimately brought the attention of a Texas Ranger and the US Government, but Scorsese and his co-writer Eric Roth reframed the story to focus on Ernest and Mollie’s relationship, as well as the dark deeds of Ernest’s uncle, William Hale (De Niro), who steered his nephew towards taking what was rightfully Mollie’s and the Osage Nation’s.

“Mollie is really the heroine in a lot of ways,” Di Caprio adds. “Mollie embodies the pain of the Osage people.”

“It’s a powerful film, and I’m honored to stand with the Osage Nation and the descendants of those who perished,” Gladstone says.

Check out the look at Lily Gladstone’s character, Mollie, below. Killers of the Flower Moon arrives in theaters on October 20: