When Lyra notices the shadow of the old windmill on the hill moving unnaturally, she embarks on a dangerous journey to uncover its dark secret. Joined by a mysterious artist and her younger brother, Sam, Lyra discovers an ancient trap beneath the hill, one that, if unleashed, could engulf the entire village in darkness. As the shadow grows stronger and a mythical wolf guards its release, Lyra must race against time to stop the looming threat before it's too late.