Jairec's holiday in San Francisco turned into a living nightmare when he's attacked by a chiang-shih, a Chinese vampire. He has until the end of the Moon Festival to convince Autumn, an herbalist, to hand over the elixir of life. Without it he will become the white-haired demon for all eternity. Only Autumn believes he's delusional. The elixir of life is a legend. When a mysterious attack leaves the victim drained of blood, Autumn is forced to believe monsters really do exist. The master chiang-shih is raising an army with the intent of taking over Chinatown and he is determined to have Jairec and Autumn at his side.