Pete is a small plush man from a small town in North Dakota. One day he decided to go on a journey, and then remembered that he cannot walk on his own.
So you do it for him. Every Redditor gets to move Pete exactly one step, once. Most steps are about a metre. A rare few are a skateboard, a bus, a plane, or an actual rocket. Then it is somebody else's turn.
Nobody knows how far he gets, and that is the entire point.