Explorer Bruce Wayne accidentally unleashes an ancient evil, and returns to Gotham after being away for two decades. There, Batman battles Lovecraftian supernatural forces and encounters allies and enemies such as Green Arrow, Ra’s al Ghul, Mr. Freeze, Killer Croc, Two-Face and James Gordon.

As the home planet of the Green Lantern Corps faces a battle with an ancient enemy, Hal Jordan prepares new recruit Arisia for the coming conflict by relating stories of the first Green Lantern and several of Hal’s comrades.

The gang of Mystery Inc. take a trip to Japan and find themselves circling Asia and the Pacific in a treasure hunt, racing against the vengeful Black Samurai and his Ninja warriors to find the legendary Sword of Fate, an ancient blade fabled to possess extraordinary supernatural powers.