Between the sea and the mountains in a small village in Norway, Aslak lives with his mother Astrid. A tragic event occurs that Aslak can't quite understand and Astrid struggles to handle. Aslak's friend Lasse shows him a macabre scene; three half-eaten sheep killed on a full moon night. Lasse tells Aslak that whatever killed the sheep lives in the dark forest behind their house. In a quest for answers, Aslak ventures into the menacing forest. Is what happens on his journey merely a boy's imagination or is it reality?