This episode further sets up this tournament arc that appears to be mostly a breather from the last one with Freiza with resulted in the entire Earth being destroyed. This was still great because it has the characters act very intelligently. Champa wants to find the last Super Dragon Ball so they decide to just ask Shenron, but not even he can locate it. This plot is kicked off by Champa wanting to switch Earths with Beerus. Bulma does wonder why they don't just use the Dragonballs to switch Earths. Beerus says he doesn't make wishes and would gladly just destroy the Universe.
Oh, and one big note here, we're introduced to Bulma's sister, Tights. Yeah, it is weird that they wouldn't mention the sister of a main character who's extremely important to the series. I love the scenes where Bulma is trying to make the new Dragon Radar and it seems like even Vegeta thought she went too far getting mad at Goku. Hey, that's why she married him after all! Bulma may in fact be more entertaining in this show than any Dragonball series. I like how Vados is now the most powerful woman. ***1/2