In the movie \"A Dark Song\" the mental condition of Sofia, causes big questions in the people surrounding it, after all it almost never leave the house and constantly reads various occult literature. And not for nothing it finds already soon the person necessary to it who is ready to carry out ritual of black magic. His name is Joseph, and he perfectly understands magic, but isn\'t able to find a common language with the people surrounding it. Before ritual Joseph Warned Sofia that after ritual none of them will begin won\'t be able to leave the house, and all forces will leave on that what to keep the mind and not to be forever ground in the twilight world filled with various secrets and long ago the forgotten knowledge.