Injustice Gods Among Us Year Five TP Vol 02

In these stories from issues #8-14, Catwoman returns to her life of crime, joined by Harley-but why is Damian transforming himself into the new Nightwing? Plus, can Superman and the Regime stop Bizarro before his destructive blunders lead to a major disaster? And what happens when Batman and the new Nightwing find themselves on opposing sides of the conflict that's tearing their world apart?