An Operation is a series of Simulations that collectively tell a story.
 
Each Operation contains a series of Goals. You’ll need to complete those Goals in order to advance the story. Once you’ve completed all required Goals, you can end the Operation whenever you like, and proceed to the Shootout.

There are currently 92 Operations available in ARCHER: DANGER PHONE. Krieger and Anime Bride are always working to come up with new scenarios, so new Operations will become available regularly!