In the late 1970s, a young boy disappears from a summer cabin in the Swedish woods. His mother claims that he was abducted by a giant. The boy is never found.
 
Twenty-five years later, an old woman claims that a creature has been standing outside her house, observing her and her five year old grandson for hours.
 
When Susso - a blogger who's dedicated her life to the search for creatures whose existences have not been proved - hears of this, and sees a possible link between the two incidents, she takes to the road on a terrifying adventure into the unknown.