This is a story about the secret arts of yin and yang and the strange figures of the martial world. Many secret arts and Taoist techniques have been lost over the years, but some people still preserve the teachings handed down by their ancestors. They understand yin and yang, know Taoist arts, and possess extraordinary skills. Some hide in the cities, while others cultivate in remote villages and mountains. This is an age when the line between ghosts, gods, and humans has blurred, an age full of color yet lacking in faith. Two hapless men stumble into the world of yin-yang arts and Taoist magic, uncovering one shadowy mystery after another hidden beneath the sunlight.