With Supergirl (voiced by Meg Donnelly) struggling to acclimate on Earth, her cousin Superman (Darren Criss) proposes she train alongside metahumans her own age-some ten centuries in the future, at the Academy for the Legion of Super-Heroes. As she settles in for her studies, is arch-foe's descendant Brainiac 5 (Harry Shum, Jr.) the threat she supposes-and can she deal with the schemes of the Dark Circle? Jensen Ackles. Matt Bomer, Yuri Lowenthal, Gideon Adlon, Cynthia Hamidi also provide voices. 83 min. Widescreen; Soundtrack: English.