Dwayne-Johnson's Hercules has debuted its first clip.

Dwayne 'The Rock' Johnson and John Hurt feature in the short clip which depicts an ambush against Hercules' army.

The film is based on Radical Comics' Hercules: The Thracian Wars series, and centres around the disillusioned hero who has become a mercenary.

Brett Ratner (Rush Hour) is directing the big-screen adaptation which will also star Ian McShane, Joseph Fiennes, Rufus Sewell, Rebecca Ferguson and Reece Ritchie.

Hercules will be released in cinemas on July 25 in the US and on August 8 in Ireland. Watch the new clip for the movie below.