Olde World, a multi-million dollar vacation spot celebrating history's greatest civilizations, promises to bring jobs, fun and tourism to the tiny town of River Heights. However, there are rumors that the creator of the park, billionaire industrialist Thaddeus Belmont, is going broke. On the eve of the grand opening of Olde World it's discovered that Belmont has disappeared and it's up to Nancy to solve the mystery. Players must collect clues, decipher puzzles, follow suspects, sneak into areas and much more as they use their deductive reasoning skills to progress through 15 chapters.