The first film, "Men In Black," follows the story of Agent J (Will Smith), a newly recruited agent of the Men In Black (MIB), an organization tasked with monitoring and regulating alien activity on Earth. Agent J, along with his partner Agent K (Tommy Lee Jones), must prevent an alien from obtaining a powerful device that could destroy the Earth.

The movie "Men In Black" is a science fiction comedy film series that has gained a significant following worldwide. The first two installments, "Men In Black" (1997) and "Men In Black II" (2002), are particularly notable for their unique blend of humor, action, and science fiction elements.

In "Men In Black II," Agent J and Agent X use a device that manipulates time to prevent an alien threat. The device allows them to rewind, fast-forward, and pause time, creating a range of comedic and action-packed sequences.

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For example, in "Men In Black," Agent J and Agent K use a neuralyzer to erase the memories of a bystander who has witnessed an alien encounter. The device is shown to be highly effective, with the bystander forgetting the encounter entirely.