After an eye-opening encounter of the third kind, the secret MiB organization's newest recruit, Agent M (Tessa Thompson), finds herself under the wing of the heroic Agent H (Chris Hemsworth) in cosmopolitan London, when a shape-shifting duo of intergalactic assassins executes an alien aristocrat. Now, with a devastating super-weapon of mass destruction hidden somewhere on Earth, the Men in Black will leave no stone unturned to retrieve it. However, heavy clouds of mistrust and a scent of betrayal envelop the once-incorruptible agency. Is there a well-placed mole in their midst?The Men in Black have always protected the Earth from the scum of the universe. In this new adventure, they tackle their biggest threat to date: a mole in the Men in Black organization.