"Men in Black 3" is a science fiction comedy film released in 2012. It is the third installment in the Men in Black franchise, featuring Will Smith as Agent J and Tommy Lee Jones as Agent K. The story follows Agent J as he travels back in time to 1969 to save his partner and prevent an alien invasion. In the past, Agent J meets a younger version of Agent K, played by Josh Brolin. Together, they must confront the villain Boris the Animal, who has escaped from prison and is determined to alter history. The film combines humor, action, and special effects to entertain audiences.