Anna Stolman buries her grandmother and plans to leave Zatonsk and return to the capital. However, fate has other plans for her. The most horrifying events occur at night, and these crimes can only be solved with Anna's help. The mysterious death of the best doctor at the Zatonsk clinic and the monstrous murder of a young girl in a house with a bad reputation force Anna to stay in the province for a while longer and delve into her family history.