Weird title. This movie had very little to do with any sort of apocalypse. It had more to do with Superman, Batman, Wonderwoman, (we even have a cameo from Superdog,) and some peeps that I've never heard of rescuing teen-scene Supergirl from the clutches of Darkseid.
Apparently Darkseid wants an ultra-super, ultra-obnoxious teenager to be the captain of his fury army. Which is a little amazing since the only thing she's good at is destroying stuff, bringing everyone down, and eating all our steaks.
This movie was PG13 for some reason. I think that rating is a bit ridiculous. Yes, people die. Yes, there's a little blood. Yes, each and every superhero lady's costume is either underwear, or a monstrosity so heinous I wouldn't fain to sleep in it. (See above.) But PG13? I think they're getting a little ahead of themselves. Oh! Supergirl does run around naked for a while. You don't see anything, but you know she's naked. That's probably the cause, but even then, when Disney's The Hunchback of Notre Dame didn't have clothes on fire-Esmeralda in the "Hell Fire" scene, they were only going to give the movie a PG rating, up from a G. I guess veiled nudity, plus blood, and a wee bit of violence equals something as inappropriate for children as The Dark Knight, or Austen Powers.
Overall, this movie was entertaining enough. I would say "I liked it," or "I enjoyed it." Whilst I LOVED Batman: Mask of the Phantasm.