A young man lingers in the family home of his fiancee, after her accidental death. While grieving along with her parents and drawn into legal issues presented by a district attorney seeking justice for the family, he finds himself falling in love with another woman, against his own best intentions.

It has been four years since the alien-seeking agents averted an intergalactic disaster of epic proportions. Kay has since returned to the comforts of civilian life while Jay continues to work for the Men in Black, the highly funded yet unofficial government agency that regulates all things alien on earth. While investigating a seemingly routine crime, Jay uncovers a diabolical plot masterminded by Serleena, an evil Kylothian monster who disguises herself as a sexy lingerie model. It’s a race against the clock as Jay must convince Kay—who not only has no memory of his time spent with the agency, but is also the only person alive who has the expertise to save the galaxy—to reunite with the MIB before Earth is destroyed completely.