DC Crossover Event - Crisis On Infinite Earths

Four-episode crossover event featuring DC superheroes from 'Supergirl', 'Batwoman', 'Arrow', 'The Flash' and 'Legends of Tomorrow'. After an anti-matter wave destroys several parallel universes and threatens the entire Multiverse, Harbinger (Audrey Marie Anderson) enlists the help of Supergirl (Melissa Benoist), The Flash (Grant Gustin), Green Arrow (Stephen Amell), Batwoman (Ruby Rose), White Canary (Caity Lotz), The Atom (Brandon Routh) and Superman (Tyler Hoechlin) to avert the impending crisis.