The time machine!!!

Mr. Robert Weasley was very busy with his new time machine. It's already been a week since he left home. Throughout the day he was struggling to fix things and make a progress in his work. After the whole process too, he was not able to get a positive result. After many tries and efforts, the green coloured light was on. His happiness had no limits. Without any due, he got into the machine to test his work. 

Set the time to two decades later and pressed the 'proceed' button. The process began and after some time the machine stopped. Mr. Weasley got down from the machine. There was a blanket of dust around him. 

Slowly when everything became clear, he was prone to a mental shock seeing the existence of ALIENS all around. Humans were working under the aliens. He couldn't speak anything. Hiding he observed everything. 

Through humans, only technology improved. Now the same technology has led to a state where it started ruling its own masters. 

At every place Robert found aliens ordering work for humans and paying them in return. He immediately returned back and reported everything...