Review Date: 2/19/15
Bizarro's well intended attempts to protect Metropolis result in mayhem and destruction, so Superman sends him away to his own planet where he can't hurt anyone. Darkseid invades Bizarro's planet a short time later, which forces Bizarro to return to Earth and create Bizarro versions of Batman, Wonder Woman, Cyborg, and Guy Gardner to help him defend his world. Naturally, the Justice League decides to follow and figure out what's going on. Through teamwork, the Justice League and their Bizarro opposites manage to foil Darkseid's plans for world domination and send him packing.
It's a fun and charming Lego adventure, but it suffers from overwrought sentimentality and a heavy sense of guilt. The only thing that saves it from being a complete downer is the delightfully grumpy and supremely paranoid Batman. He gives the material a much needed cynical edge and keeps everything in perspective. However, the real gem is a short bonus episode called "Lego Batman: Be-leaguered", which is very funny and enjoyable. In it, the Justice League attempts to persuade Batman to join its ranks, only to have its members start mysteriously vanishing. After saving the day, Batman reluctantly decides to join the Justice League so that he can keep an eye on that no-good alien from Krypton.
Similar to other Lego productions, the animation is colorful and playful, and the action moves at a breakneck pace. The voice acting is very good for the most part, with Troy Baker's Batman being exceptional. The writing tends to be overly kid friendly, but not nearly as offensive and dumbed down as the "Lego Star Wars" animated movies.