In a small village in Norway, a young orphan named Luke goes to live with his grandmother, a sweet but eccentric old woman who tells him stories about witches. These wicked creatures hate children and have a mission: to turn them into mice. One day, while exploring the world of legends, Luke and his grandmother stumble upon a secret meeting of witches. Through his eyes, Luke discovers the true nature of these malevolent beings, led by the fearsome Grand Witch, who has a diabolical plan to rid the world of all children.
As Luke and his grandmother try to thwart the Grand Witch's plans, the young boy accidentally finds himself transformed into a mouse. However, far from being discouraged, Luke joins other rodents who have also suffered the transformation to execute a daring plan in the midst of the witches' convention. With the help of his grandmother, he must prove that even in his tiny form, bravery and cunning can triumph over evil.
Amid moments of dark humor and a touch of terror, this magical adventure explores the value of friendship, family love, and resilience in the face of evil. In the end, Luke confronts the Grand Witch in an exhilarating climax that could change the fate of all the children in the world, all with a dash of ingenuity and a big heart.