"Congratulations! You are invited to participate in a special once-in-a-lifetime experience, all you need to do is go to 259 Gettysburg Street. Please do not discuss this invite with anyone."

You probably wouldn't have gone, but after all, there was a $20 bill attached to the letter.

As you walk into the building, you find yourself inside a waiting room with four other people. You sit down and make small talk with them. Soon, a woman enters the room.

"I need you kids to go back in time."