Complex sentence: When Gotham is plagued by crime committed by an animal-themed villain squad composed of Penguin, Silverback, Cheetah, Killer Croc, and Man-Bat, the Batman, Red Robin, Nightwing, Green Arrow, and Flash must band together to stop them.
Split into simpler sentences: When Gotham is plagued by crime committed by an animal-themed villain squad composed of Penguin, Silverback, Cheetah, Killer Croc, and Man-Bat. The Batman, Red Robin, Nightwing, Green Arrow, and Flash must band together to stop them.