In the first episode of a two-part story, Aquaman, ruler of Atlantis, threatens to wreak vengeance against the surface-dwellers who are despoiling his domain. At the suggestion of Justice League member Superman, Aquaman agrees to argue his case before the World Assembly. But sinister forces conspire to send Aquaman off the "deep end" again -- and this time, the whole world may suffer horribly. The Flash and Hawkgirl do not appear in this story arc. Both episodes of "The Enemy Below" were released on DVD in tandem with another Justice League two-parter, "In Blackest Night," in April of 2003 under the umbrella title "Justice on Trial."