(1) the time traveller explores the wells and finds a complex network of undeground tunnels.(2) the traveller encounters the sub morlocks(3) the traveller realizes people of the future belong to two different races called "eloi and morlocks."(4) the traveller finds his machine missing(5) traveller saves weena from drowning(6) the travller realizes the morlocks have his machine.
It is a challenge that the main character must face in order to progress through a usually conflicting story to restore order to their world or to grow as a person.