Xiaolin Showdown Episode 20 - Enter the Dragon Episode Title:Enter the Dragon.Episode Description:Every 1500 years, Dojo is taken over by an extreme urge to collect Shen Gong Wu, and he will destroy anything in his path in his quest to do so. When Omi is left alone to guard Dojo from escaping from a cage, he is tricked into letting him out of his cage and Dojo escapes to wreak havoc on anyone in his way of getting Shen Gong Wu. He eats both the Xiaolin and the Heylin, and they must work together to escape from the evil two-headed Dojo.