One day a man fell in a pothole on his way home. Before he noticed, he was in a strange room with a mysterious voice who claims to be [The system between worlds] proclaiming his death as well as stating "What you fell in was a hole to the lower world".

The man also discovered that the geniuses of this world, were normal people from a higher world, who fell just like him.

Now he has been given the chance to reincarnate in a lower world.