The following storyline is from the game's official website:
Alien scum. Fast Cars. Massive firepower. Saving the universe.
Do these things interest you? If so, we need you to join the universe's most elite secret taskforce in MEN IN BLACK: ALIEN CRISIS. Strap on a Deatomizer or Noisy Cricket and get into the middle of the action. You are the Men In Black's newest recruit on an investigative mission to gather intelligence and save the world from an alien conspiracy.
Experience interrogations, high-speed driving chases, and intense messy battles through the streets of New York City. If you've got the thirst to blast away the most wretched intergalactic creatures and you want to wear the suit and sunglasses, now is your chance. If not, we can neuralyze you and this little synopsis never even happened.
Weapon: Deatomizer Description:Heavy, Plasma Firing, Semi-Automatic, Chargeable Uses:Policing Actions, Standard Issue 1984-Present The Deatomizer became a staple of the Men in Black on rough assignments sometime during the 80s, though various versions of the weapon had existed since the foundation of the agency. Shotgun-sized and powerful, the Series 4 model has reduced kickback and increased power.
Weapon: Noisy Cricket Description:Tiny, Powerful, Unwieldy Uses:Heavy Assault This palm-sized firearm wields an unbelievable amount of power. The Cricket can level a truck, blast through three feet of concrete, or shatter the exoskeleton of all but the hardiest of extraterrestrials. Few agents ever get the hang of holding the gun properly to minimize its kickback, often resulting in hurling them across the room.
Weapon: Agent Pistol Description:Handheld, Rechargeable, Manifold settings Uses:Standard Issue 1995-Present What it lacks in power this weapon makes up for in its inconspicuous nature that makes it the perfect sidearm for most missions. Additionally, all agents are trained in how to switch rounds from primary fire to "Alkali" when a single weapon is the difference between life and death-by-acidic-goo.
Weapon: Tri-barrel Plasma Gun Description:Plasma-powered, Plasma discharging, Heavy, Cumbersome Uses:Heavy Assault, Riot Control Nicknamed “The Jackhammer”, this massive and ungainly weapon is for only the most dangerous of situations. If unloaded in a steady stream of fire, it can level a city block. When an enraged Elephantite is on the rampage on Staten Island, the Tri-barrel Plasma Gun is the first weapon that is ready.