Long Ago, Two races ruled over earth, HUMANS and MONSTERS. One day, and infectious disease took over the monsters, a disease known as DERP. The monster grew insane and illogical, and the humans soon grew fear that they would also get the DERP. So they declared war on the monsters. The Humans won the battle, and sent the monsters into the underground along with the DERP. Many years later, legend says that those who climb Mt. Ebott never return. And those who do return have no sanity left in them.