Answer: Men in Black
Earth is a neutral zone for aliens in the hilarious, 1997, science fiction film "Men in Black". When an opening appears in the unknown government agency, the Men in Black (MiB), Tommy Lee Jones and Rip Torn (as Agents J and Z) have to choose a replacement. Will Smith plays New York cop, James Edwards, who gets the job as Agent J.
When a galaxy is missing and the Arquillians want it returned or they'll blow up the Earth within a standard galactic week (only hours), it's up to J and K to retrieve it. Of course, in between them and success stands a Bug, and, since it's an intergalactic Bug, it's a pretty dangerous character to deal with.