Chase Young debuted in this episode. According to my friend, Chase is the ultimate villain in the entire series.
The whole idea of the episode was pretty vague, in my opinion. Nothing really happened, except the whole concept that Dojo was captured and taken to Chase. However, I believe the writers wanted this episode to be more of a character development one.
Another character who makes his debut is Master Monk Guan. Guan fought Chase a very long time ago, and he ended up being defeated. However, in this episode, Guan gets his revenge and ends up defeating Guan in a regular showdown (no Shen Gong Wu used).
In result, Chase releases Dojo. The whole reason Chase captured Dojo was because dragons are an important ingredient in a soup that makes Chase immortal.
Overall, this episode was average. I have seen better. I was kind of hoping for a Xiaolin Showdown and that the gang would win a new Shen Gong Wu, but they didn't.