In the real world, people whose deepest desires erupt after they suffer a major upheaval are chosen by a mysterious force beyond their understanding. Without exception, they receive a mysterious "Identity Card." With it, they can open a passage to another world at a specific location and take part in a heart-pounding live-action game. The game is like a gamble against fate: only the person who survives to the end will be allowed to see their wish come true.
