Dyson Sphere

     "The Empire wants you and your construction fleet to create a Dyson Sphere around the M class star Kolbrek #50821475, otherwise known as Bjorn. You should meet no resistance in that system." High General Alder commanded, I followed, because mutiny is capital.

This system is not very interesting. It's your run-of-the-mill system with gas giants and rocky pebbles. There is no way this is inhabited.

Day 458, Dyson Sphere: 25% Complete.

Someone didn't do their job correctly, my chief Communications officer ran onto the bridge, yelling "Sir! We just got a message from Planet #72593-BCAR, dubbed Terek, it appears that it has sentient life!"

"WHAT!? What did they say?"

"It's not in any known language, but we can decrypt it. It says, 'Hello, we are the people of the United States of America, and we would like to know, what are you doing with our star?'"

"Get general Alder on the line" the screen sparks to life, with a groggy general staring at it.

"What do you want?"

"Sorry sir, but it appears that there's a civilization in this system."

"Impossible, we scanned that system years ago!"

"Yes, but a quick scan shows that their still in the country phase of civilization, they have a small station in low orbit and it can only hold crew members."

"Contact them and put the Dyson Sphere on hold."

"Yes sir." The screen died.

"Send them a message."

"Yes sir."

Hello, people of Earth! We are a construction fleet from the Empire of Skervann. We were building a Dyson Sphere around your star. We didn't know you were here because our scanners  pick up stage 2 and up civilizations, and you haven't even reached stage 1. Our commander will land in the city of Houston, we wish for a long and prosperous relationship between us.

"Sir, General Alder is on the line!"

"Patch him through." the screen sparked to life with a loud thunk

"New orders from the higher ups. You are to deconstruct the Dyson Sphere, and send an ambassador. More fleets are on the way. We will share our technology. Our new goal is to make them a stage 2 civilization within 10 years." The screen flickered dead. Finally, the Sverkann will have a friend in this gladiatorial arena we call the galaxy.

Idea from the subreddit r/writingprompts