In the mythical kingdom of Tir Na Nog, the ancient gods of the Celts and the fairy folk have lived in fragile peace for centuries. But when the king of one of the warring factions is found murdered, conflict seems inevitable. Wonder Woman, called upon to mediate, knows that uncovering the murder will save the peace, but catching a criminal requires a detective.

Batman faces a supernatural threat in Gotham.
In the Irish Quarter of the city, the residents are frozen in their tracks by visions of ghosts and monsters. But when the evidence links Gotham's spectral threat to the events in Tir Na Nog, Batman has no choice but to travel to a world of myths and magic that he struggles to comprehend.

But Tir Na Nog is not just a magical paradise - it is also a prison. And if Wonder Woman and Batman cannot prevent the impending war, the gates of the prison will swing wide open... and our world will be flooded with gods and monsters!

From writer and artist Liam Sharp (Wonder Woman), Batman and Wonder Woman find themselves deeply embroiled in a mystery in a world unlike anything they have known before... with deadly consequences for our world!