The highly anticipated first trailer for 'Mufasa: The Lion King' will premiere on April 29 during 'Good Morning America' on ABC. The film, directed by Barry Jenkins, is set to release in theaters on December 20. It features a star-studded voice cast including Beyoncé as Nala, Donald Glover as Simba, Aaron Pierre as Mufasa, and Kelvin Harrison Jr. as Scar, and introduces Blue Ivy Carter as Kiara. Mads Mikkelsen joins the cast as Kiros, a new character. The film's narrative, told through flashbacks, revolves around the legendary story of Mufasa, exploring his origins and rise to power, with Rafiki narrating the tale to Kiara. Lin-Manuel Miranda contributes original songs, enhancing the film's appeal.