The Flash and Wonder Woman are attempting to apprehend Mirror Master and Poison Ivy in Central City, when the super-being known as Ultraa appears to help them out. But when Ultraa reasons that removing the super-powers from the Justice League would stop the rise of super-criminals, he creates a device that fills anyone exposed to it with self-doubt and other negative thoughts. He then uses the device to de-power the Justice League, and also exposes the Injustice Gang to it... little knowing that negative thoughts actually strengthen their actions. Can the Justice League overcome their self-doubt in order to save the world?