Watch The First Trailer For 'Elvis & Nixon', Starring Michael Shannon & Kevin Spacey

The first trailer for Amazon Studios' ambitious historical comedy, Elvis & Nixon — recounting the story of how the former US President and the King met one fateful December morning in 1970 — has arrived online a few months ahead of the film's US release, providing the first proper look at the Liza Johnson-directed flick.

Starring celebrated actors Michael Shannon and Kevin Spacey as Presley and Nixon respectively, the film examines the (questionably accurate) chain of events following Presley's unexpected arrival at the White House on the morning of 21 December, 1970, with an urgent request for President Nixon — to be sworn in as an undercover agent for the national Bureau of Narcotics & Dangerous Drugs. The meeting was consequently captured in a photograph (now the most-requested photo ever from the US National Archives) and has transcended into pop-culture legend, but it and the encounter itself remained secret until 1972, when it was finally broken by the Washington Post.

The film's ensemble cast is an impressive one, featuring the likes of Colin Hanks (Fargo) as lawyer and Nixon administration official Egil Krogh, Evan Peters (American Horror Story, X-Men: Days Of Future Past) as Nixon's deputy assistant, Dwight Lee Chapin, and Tate Donovan (The OC, Damages) as White House chief of staff H.R. Haldeman, as well as performances from Alex Pettyfer, Johnny Knoxville, musician Sky Ferreira and more.

See the trailer below.

Despite positioning itself as "the untold story" of two men at the height of their powers, Elvis & Nixon isn't the first cinematic retelling of when the POTUS met the King, however; in 1997, director Allan Arkush released Elvis Meets Nixon, starring Rick Peters and Bob Gunton in the respective title roles, an "exaggerated" but "quite accurate" depiction of the encounter.

Elvis & Nixon will be released in the United States on 15 April.