What they got right: I like seeing the "sidekicks" team-up. This is pre-Krypton's Back Kara and pre-Batman's Dead Robin (including the "present day" diner scene), so they're still interesting characters. Seeing Supergirl introduced to the seeder side of the world, and her reaction, are also interesting.
What they got wrong: Robin's flipping out at the end feels forced. It's also only "interesting" in concept and plot. It's not a bad story, but it's not a very exciting story, either. It's just…functional.
Recommendation: There are some cute moments before they reach Arkham, and it's a decent story. Worth a check out.
