'Mufasa: The Lion King' Starring Aaron Pierre, Kelvin Harrison Jr. Drops Trailer

Disney has dropped the trailer for its Lion King prequel, Mufasa: The Lion King.

The upcoming music-filled film will tell the story of how Mufasa became king of the lions.

The official synopsis:

The Lion King enlists Rafiki to relay the legend of Mufasa to young lion cub Kiara, daughter of Simba and Nala, with Timon and Pumbaa lending their signature schtick. Told in flashbacks, the story introduces Mufasa as an orphaned cub, lost and alone until he meets a sympathetic lion named Taka—the heir to a royal bloodline. The chance meeting sets in motion an expansive journey of an extraordinary group of misfits searching for their destiny—their bonds will be tested as they work together to evade a threatening and deadly foe.

Directed by Academy Award-winning director Barry Jenkins, Mufasa: The Lion King stars Aaron Pierre as Mufasa, Kelvin Harrison Jr. as a young Scar, Beyoncé returns as Nala and Blue Ivy will play Nala's daughter Kiara.

"What I loved about the script was it went into that place where you can really understand how a person becomes the person that they grow up to be," Jenkins explains in an interview with Entertainment Weekly. "Seeing Scar as a cub and being like, 'Yo, I kind of like that guy,' it just did something to my brain. The other element of it was, I've always been obsessed with why we place people on pedestals, whether it's kings, presidents, queens, prime ministers, whatever it is."

Mufasa: The Lion King hits theaters on December 20. Check out the trailer below.