In a world where blood is more than just a vital liquid, former FBI agent Terry McCaleb finds himself trapped in a labyrinth of mystery and redemption. After suffering a heart attack, Terry retires and settles into a quiet life on a boat in the Los Angeles canal. However, his peace is shattered when a young woman appears in his life, revealing that the victim of a murder has personal connections to him. This revelation pushes him to revive his investigative instincts, but beyond the crimes, he faces the threat of his own heart, which has already betrayed him once.
With the help of his neighbor, who turns out to be a passionate investigator, Terry begins to unravel a web of deceit and secrets. As he delves into the dark world of the killer, he realizes that his own life is in danger and that this case resonates with echoes from his past. His obsession with solving the mystery also offers him the chance to confront his own demons, related to his health and his inability to leave his old job behind. With unexpected twists and a narrative that keeps the audience on edge, Terry is not only seeking justice for the death of the young woman but also his own salvation in a dilemma where the lines between good and evil are more blurred than they appear.