Children are inexplicably disappearing without trace. The psychologist Jamilen Lasso, who is going through a low point in his life, is given the task of supporting the families, but when he digs into the victims' pasts he discovers that things are not quite what they seem. Seemingly unconnected events become the backdrop for a criminal investigation that seems to point to a very unusual pursuit. When the body of one of the children appears on a riverbank with signs of having been savagely beaten, a large-scale investigation is set underway. What no one knows is that one enigmatic person has his own agenda and that each of the children is part of an elaborate plan that leads Jamilen to discover that truth and lies are two sides of the same coin, and that evil can hide in the hearts of the most unexpected people. Do you dare cross the threshold of Hades?