Due to the fight with Imperiex, the Legion has been spread out thin. To solve this, they Legion decide, to much as Lighting Lad's horror, to hold Auditions. They get Nemesis Kid, who can negate Super-powers (rather than counter them like in the comics) and is a kiss-up to Cosmic Boy. Superman goes out of his way to pick up a 30th Century version of Robin, Karate Kid.
The episode is mostly around Chameleon Boy, which is fine. The episode shows us that we have have to learn to our natural powers, like hand-to-hand combat, rather than superpowers( Wait, aren't the powers of the Legion are natural to them?)Love the idea of Karate Kid trying to live up with people with powers. The only problem was when Karate Kid left the Chain-man to be blown up, sure it was 'mystery' death, the kind that anyone in comics can live through, but didn't TimberWolf almost got expelled from the Legion for 'killing' his old man? Maybe this case is different because the Chain-man was a convicted bad-guy. A pretty average episode at best.