v. 1: "Lynn Okamotos beloved series is now available in English for the very first time, presented here in a special omnibus collecting three volumes in one! Captured and isolated against their will, the Diclonius species are a threat waiting to break free. When a young Diclonius girl, Nyu, escapes from the research facility she was being held in, she manages finds solace in two allies, until danger finds her again, putting everyone at risk. However, her enemies soon realize theyre in over their heads as an attempt to subdue Nyu results in unspeakable tragedy"--v. 2: "The ruthless soldier Bando pursues Nyus alter-ego Lucy with vengeance after he receives bionic prosthetic replacements as a result of their gruesome battle. Meanwhile, Lucy recalls her buried, tragic memories as a Diclonius child. To worsen the situation, Chief Kakuzawa orders a Diclonius named Mariko to kill Nana and return Lucy to the research facility!"--v. 3: "Mariko is running out of time-her internalized bombs are set to explode at any minute.

Hoping to tie up loose ends, she decides to confront her alienated father, Kurama. Meanwhile, when Nyu and Kouta arrive near the Diclonii island facility, Nyu is captured as Chief Kakuzawa attempts to fulfill his master plan of eliminating humans in favor of the Diclonii species."--v. 4: "It all ends here. A sudden attack on the Maple House places Kouta, Yuka, and the rest of the gang hostage under a group of equipped soldiers led by Nousou. This confrontation sparks Kouta to recollect the missing pieces of his past, which may ultimately be chained to the history of the Diclonius Research Institute"--.