A bright-spirited young historical scholar, Iba, disappears while on a lone expedition to study the ancient Silk Road. A year later his girlfriend, Kyoko, sets out for the Silk Road in order to find clues that will help to unravel the mystery of Iba's disappearance. When she arrives, she finds the charm she gave Iba for protection and moments later she is sucked into a black vortex and loses co...