Men in Black 3 is a 2012 science fiction action comedy film and the third installment in the Men in Black film series. The film was directed by Barry Sonnenfeld and stars Will Smith, Tommy Lee Jones, and Josh Brolin.

The plot of the film revolves around Agent J (Will Smith) traveling back in time to 1969 to stop an alien criminal named Boris the Animal (Jemaine Clement) from killing Agent K (Tommy Lee Jones) and changing history.

Overall, Men in Black 3 received mixed reviews from critics and audiences alike. While some praised the film for its humor and performances, others criticized it for its convoluted plot and lack of originality.

One of the highlights of the film was the performance of Josh Brolin as the young Agent K, which was widely praised for its accuracy and humor. Will Smith also gave a strong performance as Agent J, bringing his trademark humor and charm to the role.

However, some critics felt that the plot was overly complicated and convoluted, and that the time travel aspect of the story was not well executed. Additionally, some felt that the film relied too heavily on nostalgia and failed to bring anything new or fresh to the franchise.

Despite these criticisms, Men in Black 3 still managed to be a financial success, grossing over $600 million worldwide. While it may not be the strongest entry in the series, it is still an enjoyable action comedy that fans of the franchise are likely to appreciate.