Always haunted by his past, Abe Sapien follows the trace of his human origins to the Indonesian islands and locates the members of a strange brotherhood to which he would have belonged, during the time of the American civil war. At the same time, within the secret base of the B.P.R.D., the visions of Apocalypse of Liz are becoming clearer, and Johann Kraus makes a disturbing discovery on one of the members of the Bureau...