The story follows Amelia, a mother struggling to raise her restless son, Samuel, after the tragic death of her husband. Samuel is a sensitive boy who is not only tormented by his fears but also has an unusual obsession with a mysterious monster. Their lives become even more complicated when they discover a strange book titled "Mr. Babadook," which tells the story of a terrifying creature that haunts those who read it.
As Samuel becomes obsessed with the book and its manifestations, Amelia begins to experience increasingly disturbing episodes. The manifestations of the Babadook become more palpable, and the line between reality and despair blurs. Tension rises in their home, where anguish and sadness mix with fear, turning their world into a nightmare.
Amelia confronts her own demons, grappling with guilt and pain while trying to protect Samuel from the monster that seems to come to life. This struggle between the internal and the external creates an atmosphere of psychological horror that leaves her on the brink of madness. Over time, the mother must confront not only the Babadook but also her own fears and traumas, testing the limits of maternal love and what it truly means to face your own demons. Throughout it all, the bond between mother and son is tested like never before.