Details continue to emerge on Dolly Parton's new Christmas movie, which she's been filming in and around her Pigeon Forge, Tennessee, theme park, Dollywood.

NBC revealed Monday that Parton's holiday flick would also include Jimmy Fallon, Miley Cyrus, Willie Nelson, Billy Ray Cyrus, Jimmie Allen, Zach Williams, Tom Everett Scott, Ana Gasteyer and Angel Parker.

"Dolly Parton's Mountain Magic Christmas" was announced in May and is coming to NBC later this year.

Parton will star in the feature, which the network describes as "a modern-day movie musical." "Dolly Parton's Mountain Magic Christmas" is the frenetic backstage story and delightful on-camera results of Dolly's desire to uplift an exhausted world's spirits by sharing the unique 'mountain magic' she has always found in and around Dollywood at Christmas," reads the holiday special's description from the network.

According to NBC, the movie follows Parton as she makes the special within a special and becomes engulfed in "a private journey into her past, guided by the mysterious appearances of her personal Three Wise Men."

The famed country singer and Sevierville, Tennessee, native has an epiphany when it's time to broadcast her fictional television special. She diverts from the plan and "shows the world that the real magic of Christmas lies in the hearts of the children we all once were, the realization that Christmas is about the people we share it with, and how her faith remains the common thread between Christmases past, present, and future," says NBC.

Parton is country music's defacto Christmas queen as she's released multiple Christmas albums, including 2020's "A Holly Dolly Christmas," and made a host of holiday movies, including 1984's "Kenny & Dolly: A Christmas to Remember" with Kenny Rogers and 2020's "A Holly Dolly Christmas"! 986's "A Smoky Mountain Christmas," Hallmark's 2019 adventure "Christmas at Dollywood," and Netflix's 2020 Emmy-winning "Dolly Parton's Christmas on the Square."

"Dolly Parton's Magic Mountain Christmas" is Parton's third TV film collaboration with NBC, following 2015's "Dolly Parton's Coat of Many Colors" and its holiday-themed sequel, "2016's Dolly Parton's Christmas of Many Colors: Circle of Love."