Twelve-year-old Iwo lives in a small, post-communist town that is home to the old and destroyed Black Mill – once a place of work for many parents. Breaking the promise to not approach the old mill, the children accidentally unleash its evil powers. From that moment, nothing will ever be the same again as people and things start to disappear.
For his birthday, eight-year-old Oskar receives a clue about a mysterious treasure hunt left to him by his deceased parents. He immediately hires the best detective he knows: The star of the popular TV series "Detective Bruno". Together, the two embark on a turbulent paper chase and discover far more than just the next clue. A heart-warming family adventure to guess along with!
