For this fourth entry in the series, out are Will Smith and Tommy Lee Jones. Instead, we get two new characters to follow working for the super-secret government organization to protect Earth from interdimensional threats and to keep knowledge of alien lifeforms away from human knowledge. The two are Tessa Thompson’s newly on-board Agent M and Chris Hemsworth’s roguish veteran named Agent H. The two “Men in Black” get their assignment from their boss, High T (Liam Neeson), to look after an alien of some renown and influence that is sought after by sinister forces for reasons come to learn more about through the course of the film. In the ensuing attempt at assassination, M is given a mysterious crystal object, one she knows must be important enough to make her a target, but something that serves no use to her until she can unlock its secret purpose. F. Gary Gray takes over the series from Barry Sonnefeld.