Justice League: Crisis on Infinite Earths Part One kicks off the crescendo of DC's Tomorrowverse. The build-up to this trilogy can be traced back to Justice League Dark: Apokolips War, which ends with Flash creating another flashpoint following the ruined state of the world. DC's push for continuity in its animated movies is similar to Marvel's Cinematic Universe. As such, Part One is packed with rich history, mystery and a lot to think about.