20 years have past, and underground nefilims coexist peacefully in a larger and improved Alacante. But they are not alone after their marriages the four couples decided to expand their families.Now your teens studying together with other child witches, nefilims, fairies, vampires and werewolves in Idris Institute. But a new threat appears, a new evil threatens the magic community when Clary discovers that despite her angel blood and Jace,residues were demon blood in their DNA at birth after his brother and know that bled transmitted to two of her four children.Other than that, Alec and Magnus are very concerned about her daughter's nightmares of only thirteen in a strange blonde woman appears faceless. Be able Clary, Jace, Alec, Magnus, Isabelle, Simon, Maia and Jordan already left behind the youth, to save the world again, or need help from their children and their new friends.