Bakugan Battle Brawlers (2007)

Season 1: Episode 16

Julie is still upset about Billy's betrayal, but tries to put it behind her so she can support the other brawlers. Meanwhile, Shun tells them about a valley similar to Bakugan Valley. Everyone heads there but on the way it is revealed that Shun lied about it being similar, and it was all a ploy to try and see why Masquerade always knows where they are all the time. He tells them that there has to be someone spying on them. At the valley, the 3rd best Brawler Chan Lee appears and challenges Dan to a brawl.