Karate Kid; Legion of Super-Heroes [Superboy; Saturn Girl; Cosmic Boy; Lightning Lad; Chameleon Boy; Colossal Boy; Sun Boy]; Lord of Time (villain); Major Disaster (villain); Diamondeth [Iris Jacobs]
The Legion joins Superboy in fighting Karate Kid. Once subdued, Karate Kid realizes that the Legionnaires have not yet met him in their own timelines. The Legion then splits up to handle natural disasters caused by the villains, before taking on Major Disaster and The Lord of Time themselves. Back in the 20th century, Iris' attempt to start a new life by volunteering for an experimental treatment at S.T.A.R. labs has unexpected results.