Recently, members of gangs in Los Angeles have been brutally killed one by one. The police believe that gang fights have started again. So they sent Agent Mike (Danny Glover) to investigate the incident and bring the criminals to justice. Unexpectedly, Mike failed and was attacked by these criminals and almost died. The criminals can kill people invisibly and have the ability to be invisible. It turns out that this is a group of monsters from outer space that specialize in hunting humans. They can be invisible, have a variety of weapons on their bodies, and can use infrared to monitor the exact location of humans. The FBI also noticed this situation. They sent a special operations team to capture these monsters alive for research. However, Mike only had the idea of destroying the monsters and avenging the victims...