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.
Penjelajah Bruce Wayne secara tidak sengaja melepaskan kejahatan kuno, dan kembali ke Gotham setelah pergi selama dua dekade. Di sana, Batman melawan kekuatan supernatural Lovecraftian dan bertemu sekutu dan musuh seperti Green Arrow, Ra’s al Ghul, Mr. Freeze, Killer Croc, Two-Face, dan James Gordon.