At the beginning of the 1990s, famous tomb explorer Hu Bayi, Wang Kaixuan and Hu's fiancée Shirley Yang decided to retire to Manhattan. After a supposedly split of the team, Wang Kaixuan was pulled into a deal to locate the ancient tomb of a Mongolian princess. Hu Bayi have been having recurring nightmare of his first love, Ding Sitian, who had supposedly died 20 years ago in an underground tomb beneath the Mongolian plains. The team is lured back to their original vocation by a mysterious, businesswoman/cult leader Ying Caihong who wants them to find the ancient tomb of a Mongolian princess. They eventually learn that what she really wants is to possess a famed artifact known as the Equinox Flower that allegedly has the power to raise the dead.