Another cool episode. It's Supergirl's 21st birthday, and she's training instead of celebrating. Little conversation between Green Arrow and Superman about how Superman and Supergirl get on. Really nice character moment for Superman, you really get to see a different side to the guy this episode, and he's only in about three minutes of it! In the 31st century, Brainiac 5 and Bouncing Boy (of the Legion of Super Heroes!) are the last ones standing. Longtime enemies, the Fatal Five, have snatched the rest of the Legion for some evil purpose. Brainiac plans to bring back three members of the JLU to save the day, as history mentions they journeyed to the future at this point... but only two return. Brainy sends the Time Bubble to snag Green Arrow, Jon Stewart and Supergirl, but they weren't in the future long before the Emerald Empress shows up and blindsides them all, grabbing Jon and Bouncing Boy. From there, it's up to GA, Supergirl, and Brainiac 5 to defeat not only the Fatal Five, but also the entire Legion of Superheroes and Green Lantern, who've been put under mind control by the Five. It's another good one. It's nice to see the Legion in animation again, and moreover its good to see a different group of heroes to last time. Pity the rest of the legion didn't get much screentime, though. Also, it seems in the DC AU Supergirl has taken up the role of Superboy. Though the whole thing between her and Brainiac 5 seems a little odd, but it made the last scene with Superman really funny. I wonder now what'll come next? I was sure the Legion would have been the big series finale, so I wonder how the writers will go one better than a JLU / LOSH team up. It's a pity they didn't make this a two part story and take a slightly larger team, and a bigger villain. But as is this was a really nice self contained little story.