Apple TV has released the first trailer for new action comedy Mayday, starring Ryan Reynolds and Kenneth Branagh.

The film is described as a “genre-bending, action-packed buddy comedy that flips the spy thriller on its head”.

Reynolds stars as US Navy pilot Lieutenant Troy “Assassin” Kelly who is sent on a top-secret mission into Russian territory at the height of the Cold War.

When the operation implodes, leaving him stranded behind enemy lines, Kelly is found by Nikolai Ustinov (Branagh), a gruff ex-KGB agent with a penchant for American culture.

The film is directed by John Francis Daley and Jonathan Goldstein. It will premiere globally on Apple TV on 4th September.