Hansel (Jeremy Renner) and Gretel (Gemma Arterton), orphaned siblings who destroyed the candy house witch in their childhood, have become the biggest nemesis of the evil witch for many years. While helping the small town of Augustberg to find missing children and hidden witches, the brother and sister discovered that a "blood moon" (lunar eclipse) would appear in three days, which was an extremely important and sacred moment for witches. The two siblings quickly took action, and the sheriff who hated them also recruited a group of people to track down the whereabouts of the witches. Not long after, the witch leader (Famke Janssen) led his men to attack the town and had a head-on conflict with the brother and sister. After the fierce battle, Gretel was severely injured, and Hansel disappeared with the witch. The battle between good and evil gradually escalated, and the brother and sister gradually learned about the secrets behind their childhood and their parents in the process...