Jay and kay reunite to provide our best against a sinister seductress who levels the toughest challenge yet for this MIB mission statement . It has been four years since the alien-seeking agents averted an intergalactic disaster of epic proportions. Now it is a race against the clock as Jay must convince Kay -- who not only has absolutely no memory of his own time spent with the MIB, but is the only living person left with the knowledge to help save the galaxy -- to reunite with the MIB before the ground submits to ultimate destruction.