 It is revealed early on in the series that a man known as Alpha was the founding Chief of MIB, and K's mentor, but later turned criminal.In the second film, at a post office in Truro, Massachusetts, Kevin Brown is recruited anew by Agent J, to recover the 'Light of Zartha'.After rescuing Laura, they fend off Serleena so they can send Laura safely off the Earth and back to her home planet.