Many years ago, the best Men in Black agent Kay was given an extremely important task to hide a mysterious space artefact ‘The Light’. 25 years later. Serleeena, an alien who takes the form of a sexy photo model comes to Earth in search of the Light. Agent Kay and Jay have to find the artefact before Serleeena, but the only problem is that Kay has his memory erased after he and Jay destroyed an alien cockroach four years ago. Now he works in a quiet Postal Department and has no slightest memory of his past. In order to save the world, Jay has to find a way to bring his memories back.