DC animated movies always either have luck when it comes to their animations budget or they miss out. This one, partly based on a story from Grant Morrison during his tenure on Batman, looks like a cheap TV animation series mixing eastern and western styles with a less than desired outcome. Besides the awful animation, content-wise they took the big idea from Morrison (Batman had a son with Talia, he has a killer mindset, Batman needs to set him on the path of good and righteousness) and butchered all the interesting details.
The overall story feels roughly inspired by Morrisons story, but it lacks all the vitals to make it more than a generic, Batman shows his real son how the world works, story. To be honest, this was boring, simplistic and downright stupid, everything that the source material was not. I can’t imagine what happened here, but the result is just bad.