It is the end of the 20th century... A large-scale natural disaster struck the eastern area of a nation. It wiped out the financial sector and resulted in a staggering loss of life. At the dawn of the 21st century, the conglomerate PROBE-NEXUS, commonly known as Probe, began reconstruction efforts in that eastern area. Colossal capital and cutting-edge technology was poured into rebuilding it. Skyscrapers that put the old high-rises to shame along with the world's biggest shopping mall and recreational facilities. This was the dazzling birth of a symbol for the new century. It was christened Zone Prime. And now, in an undeveloped sector of its western block, there was an area known as the slums...