PG-13 An endless army of shadow demons bent on the destruction of all reality swarms over our world and all parallel Earths. The only thing opposing them is the mightiest team of metahumans ever assembled. But not even the combined power of Superman, Batman, Wonder Woman, Green Lantern and all their fellow superheroes can slow down the onslaught of this invincible horde. What mysterious force is driving them? And how do the long-buried secrets of the Monitor and Supergirl threaten to crush our last defense?
贝卡（安娜·肯德里克 Anna Kendrick 饰）率领的巴顿大学阿卡贝拉女子美声合唱团终于出人头地，应邀为美国总统的生日宴会光荣献唱。谁知表演期间，“胖艾美”（蕾蓓尔·威尔森 Rebel Wilson 饰）竟意外走光，引起全场恐慌，令合唱团蒙上不雅污名，更被禁止公开演出！力挽狂澜的最后机会，就是赢得阿卡贝拉世界锦标赛的冠军，她们能否战胜来自德国的劲敌，挽回失去的名声，称霸阿卡贝拉的世界……