Li Ying, a boy from Hoenn, encountered a once-in-a-century shadow phenomenon on the night he embarked on his journey as a trainer. A shadow vine snake that has never been recorded in the illustrated book becomes his partner and involves him in the mystery of the seal thousands of years ago. The power of shadow, considered taboo by the world, is actually the last line of defense that prevents the will of light from destroying the planet. In the thousand-year war between light and darkness, Li Ying must find a third way without sacrificing either side!
