'Indiana Jones' plot details revealed

Details of the plot of the new Indiana Jones movie have been revealed.

The fourth instalment in the franchise will see Harrison Ford's adventurous archaeologist tackling a group of Soviet spies led by Irina Spalka (Cate Blanchett).

The film opens with Indiana and sidekick Mac (Ray Winstone) in a remote airfield in 1957, the height of the Cold War. Indy, who has been fired from his university teaching job, meets delinquent Mutt Williams (Shia LaBeouf), who wants him to help with a mission.

In return, Mutt will lead him to the powerful Crystal Skull of Akator, one of archaeology's most spectacular discoveries.

Indiana Jones And The Kingdom Of The Crystal Skull opens in the UK on May 22.