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.
Christopher Robin is headed off to college and he has abandoned his old friends, Pooh and Piglet, which then leads to the duo embracing their inner monsters.
