Earth, fire, water and air combined together would create great havoc everywhere. They would destroy and demolish anything that stood in their path. But do you know why? Why they don't get along well? Why if they unite together how humankind is in great danger? If there is a way we could combine them together without them creating more disater. Well, the answers are told here in this story, as I tell you about how four friends in the past came to have hatred against each other and how one day they will unite once again as the sun sets on the hundredth birthday of the earth.