In this chilling psychological thriller from acclaimed director Shunji Iwai, a quiet and seemingly gentle high school biology teacher leads a double life that borders on the macabre. The man, played with unnerving restraint by Kevin Zegers, is driven by a singular, obsessive purpose: to find young women who are contemplating suicide and offer them a final, dark salvation. His method, which he views as an act of mercy, involves draining their blood to sustain a mysterious and ailing girlfriend. As he navigates this grim ritual, he encounters a series of troubled souls, including a desperate student portrayed by Kristin Kreuk and a fragile figure played by Adelaide Clemens, each drawn into his orbit with devastating consequences. The arrival of a determined woman in his life, played by Rachael Leigh Cook, begins to unravel his carefully constructed world. A brooding and atmospheric drama, the film explores themes of loneliness, obsession, and twisted morality, blurring the lines between predator and savior in a haunting portrait of a man detached from humanity.