In "Dark Winter", the
Martian Manhunter is suddenly caught off guard by a powerful psychic presence while surveying
Antarctica. The Green Lantern and the Flash arrive to investigate a science facility in the area and discover that
Killer Frost has taken control of it. The facility's scientists mutter about a black diamond named the Heart of Darkness, which will supposedly unleash
Eclipso upon an imminent
solar eclipse. Green Lantern and Flash defeat Killer Frost and rush to the Heart of Darkness's location, where they face the emerged Eclipso, who credits his escape to Killer Frost's wicked heart. Upon Eclipso's defeat, he is cast back into the Heart of Darkness, though Green Lantern surmises that as long as darkness exists in the hearts of men, he will always be a threat. In "Trial in Ape City", the Justice League members are arrested at a
United Nations meeting by the authorities of Ape City, who charge them with kidnapping their leaders and stealing their technology.
Batman, deducing that the League is being framed, suggests allowing themselves to be
extradited to ease investigation. Batman and
Hawkgirl escape their cell to begin gathering evidence; the other members stay imprisoned to avoid cementing their perceived guilt, and they suspect
Gorilla Grodd's involvement. The pair encounter discolored doppelgangers of
Superman and
Wonder Woman, which they later determine is a single shapeshifting creature. Atop the city's royal tower, Batman and Hawkgirl confront Grodd and the shapeshifter,
Amazo, an android stolen from
Professor Ivo. Grodd boasts of his plot to stage a political
coup of Ape City before Batman and Hawkgirl defeat him and Amazo. The kidnapped leaders are released and Grodd's plan is revealed to the populace, proving the League's innocence. In "Savage Time", Superman, Wonder Woman and Martian Manhunter enter a temporal anomaly to correct an error in history;
Vandal Savage has brought advanced technology to the
Axis powers during
World War II, putting the
Allies at a disadvantage. Superman and Wonder Woman assist at the front lines while Martian Manhunter seeks out the origin of the anachronistic war machines, eventually uncovering Vandal Savage's involvement. The three infiltrate Vandal Savage's headquarters before he can launch a final assault on the Allies and foil his plot to rule the world as the war's victor, preserving Earth's timeline. == Development and release ==