A full-length trailer for Men in Black 3 has been released.

The new film reunites Will Smith and Tommy Lee Jones as J and K, two members of an undercover organisation that polices extraterrestrials.

The plot sees J travel back in time after K disappears, solving a mystery in the 1970s alongside Josh Brolin, playing a young K and doing a superb impersonation of Jones.

There is no denying that the first film in the series was a huge hit, but the less said about the flop sequel the better.

Men in Black 3 is released in 3D on 25 May in the UK.