Lowell Cunningham

Agent J must travel back in time to MIB's early years in the 1960s and save his partner, Agent K, from being assassinated by an alien. Along the way, Agent J teams up with young Agent K and learns that there are secrets to the universe that Agent K never told him.

Agent J needs help with his latest case, so he elicits the assistance of Agent K by restoring his memory. Together they battle the latest threat of aliens against Earth.