Molly (Tessa Thompson) meets the MIB as a young girl and is obsessed with discovering a secret agency. She's written off as insane for believing in aliens, but her determination brings her to the backdoor of the U.S. headquarters. Impressed by her tenacity, Chief Agent O (Emma Thompson) offers Molly a chance to prove herself, tame her Agent M, and place her on probation. M is packed off to London, where she encounters brave Agent H, who saved the world along with London's High T head (Liam Neeson) using only their wits. Agents H & M are given a seemingly low-key mission, but it's all gone haywire, leaving the destiny of the world in their hands.
Although this storey sounds very much like every other MIB movie so far this continuation of the series seemed to be much more exciting with the charming and currently famous Chris Hemsworth, combined with similarly affable Tessa Thompson. Previously, the actors collaborated with impressive success. Other than that, there isn't anything to savour here. The villains are dumb, and while some of them have pretty awesome abilities, their motives are as derivative as their personalities.